FCC ID: QISMC703 Wireless Module supporting CDMA/EvDO 800/1900

AT Command Manual MC703 Wireless Module V100R001 Issue 01 Date 2009-09-05 HUAWEI TECHNOLOGIES CO., LTD. Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any assistance, please contact our local office or company headquarters. Huawei Technologies Co., Ltd. Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China Web site:

http://www.huawei.com Email:

support@huawei.com Copyright Huawei Technologies Co., Ltd. 2008. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied. FCC Statement 15.19 NOTICE:

This device complies with Part 15 of the FCC Rules.Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and 2) This device must accept any interference received, including interference that may cause undesired operation. 15.21 NOTICE:

Changes or modifications made to this device not expressly approved by Huawei Technologies Co., Ltd. may void the FCC authorization to operate this device. 15.105 NOTE: This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this device does cause harmful interference to radio or television reception, which can be determined by connecting or disconnecting the device to a PC, the user is encouraged to try to correct the interference by adopting one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the distance between the device and the receiver. Connect the device to an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio or TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this device. This device is intended for OEM integrators only. Host system must be labeled with "Contains FCC ID: QISMC703", FCC ID displayed on label. Antenna use:

The antenna(s) used for this transmitter must be installed to provided a separation distance of at least 20cm from all persons. HUAWEI MC703 Wireless Module AT Command Manual Contents Contents Chapter 1 Basic AT Parameters .............................................................................................. 1-1 1.1 Command Echo ................................................................................................................. 1-1 1.2 Quiet Results Codes Control ............................................................................................. 1-1 1.3 Result Code Form .............................................................................................................. 1-2 1.4 Soft Reset .......................................................................................................................... 1-3 1.5 Restore Factory Configuration ........................................................................................... 1-4 1.6 DCD Option ........................................................................................................................ 1-4 1.7 DTR Option ........................................................................................................................ 1-5 1.8 S-Parameters ..................................................................................................................... 1-6 Chapter 2 Extended AT Configuration Commands ................................................................. 2-1 2.1 Query minimun capability .................................................................................................. 2-1 2.2 Query the manufacturer name ........................................................................................... 2-2 2.3 Query Model Number ........................................................................................................ 2-2 2.4 Query minimun capability .................................................................................................. 2-3 2.5 Local Flow Control ............................................................................................................. 2-4 2.6 Local Rate Reporting. ....................................................................................................... 2-5 2.7 Fixed RM Rate .................................................................................................................... 2-6 Chapter 3 Fax Parameters ....................................................................................................... 3-1 3.1 Service-class Selection ...................................................................................................... 3-1 3.2 Pass Unrecognized Commands to the IWF ...................................................................... 3-2 3.3 Query Current Service Type .............................................................................................. 3-2 3.4 Um Interface Data Compression Reporting ....................................................................... 3-3 3.5 Um Interface Data Compression ....................................................................................... 3-4 3.6 Set Rm Interface Protocol .................................................................................................. 3-5 Chapter 4 CDMA AT Parameter Commands ........................................................................... 4-1 4.1 Query Serving System. ..................................................................................................... 4-1 4.2 Query Received Signal Quality .......................................................................................... 4-2 Chapter 5 Packet Data Service AT Commands....................................................................... 5-1 5.1 Set Um Packet Data Inactivity Timer ................................................................................. 5-1 5.2 QNC Setting ....................................................................................................................... 5-2 5.3 Multiplex Option Control .................................................................................................... 5-2 5.4 SCRM Setting .................................................................................................................... 5-4 i HUAWEI MC703 Wireless Module AT Command Manual Contents 5.5 R-SCH Throttling Setting ................................................................................................... 5-4 5.6 DM Baud Rate Control ....................................................................................................... 5-5 5.7 Medium Data Rate Control ................................................................................................ 5-6 Chapter 6 Proprietary AT Command Set ................................................................................. 6-1 6.1 Transition To Diagnostics Monitor (DM) Operation ........................................................... 6-1 6.2 Protocol Revision In Use ................................................................................................... 6-2 6.3 Dump Configuration Parameters ....................................................................................... 6-2 6.4 Set Data Service Option Number Set ................................................................................ 6-3 6.5 Clear Mobile Error Log ....................................................................................................... 6-4 ii HUAWEI MC703 Wireless Module AT Command Manual Chapter 1 Basic AT Parameters 1.1 Command Echo Syntax Parameter ATE<n>

The <n> is decimal number corresponding to the option:

0: Disables command echo 1: Enables command echo. (Default.) Description The command enables or disables the echo of characters to the DTE. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example ATE1 OK ATE0 OK 1.2 Quiet Results Codes Control Syntax ATQ<n>

1-1 HUAWEI MC703 Wireless Module AT Command Manual Parameter The <n> is decimal number corresponding to the option:

0: Enables result codes to the DTE. (Default.) 1: Disables result codes to the DTE. Description The command enables or disables the sending of result codes to the DTE. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example ATQ0 OK ATQ1 OK 1.3 Result Code Form Syntax Parameter ATV<n>

The <n> is decimal number corresponding to the option:

0: Enables short-form (terse) result codes. Line feed is not issued before a short-form result code. 1: Enables long-form (verbose) result codes.

(Default.) Description This command selects the sending of short-form or long-form result codes to the DTE. 1-2 HUAWEI MC703 Wireless Module AT Command Manual Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example ATV0 OK ATV1 OK 1.4 Soft Reset Syntax Parameter ATZ<n>

The <n> is always 0 If no <value> is specified, zero is assumed. Description This command causes the modem to perform a soft reset. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example ATZ OK ATZ0 OK 1-3 HUAWEI MC703 Wireless Module AT Command Manual 1.5 Restore Factory Configuration Syntax Parameter AT&F<n>

The <n> is always 0 If no <value> is specified, zero is assumed. Description Same behavior as ATZ. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example AT&F OK AT&F0 OK 1.6 DCD Option Syntax Parameter AT&C<n>

The <n> is decimal number corresponding to the selected option:

0: DCD remains ON at all times. 1: DCD ON in accordance with the specified service. 1-4 HUAWEI MC703 Wireless Module AT Command Manual 2: DCD always on except wink on channel disconnect. Description The modem controls the DCD output in accordance with the parameter supplied. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example AT&C0 OK 1.7 DTR Option Syntax Parameter AT&D<n>

The <n> is decimal number corresponding to the selected option:

0: Ignore DTR 1: For async service, modem enter online command state following ON-to-OFF transition of DTR; for pkt service, modem end call following On-to-Off transition of DTR;

2: End call following On-to-Off transition of DTR. Description This command interprets the ON to OFF transition of the DTR signal from the DTE in accordance with the parameter supplied. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. 1-5 HUAWEI MC703 Wireless Module AT Command Manual Example AT&D0 OK 1.8 S-Parameters Syntax Parameter ATS<n>?

ATS<n>=<value>

The number <n> following the "S" indicates the "parameter number" being referenced. If the number is not recognized as a valid parameter number, an ERROR result code is issued. Immediately following this number, either a "?" or "=" character must appear. "?"

is used to read the current value of the indicated S-parameter; "=" is used to set the S-parameter to a new value. S-Parameter definitions S0 - Number of Rings to Auto-Answer S0 sets the number of the rings required before the modem automatically answers a call. the autoanswer function pertrains to Async and Fax services only. Setting this parameter to zero disables auto-answer mode.

<value>Range: 0-255 rings Default: 0 S3 - Carriage Return Character S3 sets the command line and result code terminator character Range: 0-127, ASCII decimal Default: 13 (Carriage Return) 1-6 HUAWEI MC703 Wireless Module AT Command Manual S4 - Line Feed Character S4 sets the character recognized as a line feed. The Line Feed control character is output after the Carriage Return control character if verbose result codes are used. Range: 0-127, ASCII decimal Default: 10 (Line Feed) S5 - Backspace Character S5 sets the character recognized as a backspace. The modem will not recognize the Backspace character if it is set to a value that is greater than 32 ASCII. Range: 0-32, ASCII decimal Default: 8 (Backspace) Description Reports the value of an S-Parameter or performs an S-Parameterwrite function. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example ATS0=3 OK ATS0?

3 OK 1-7 HUAWEI MC703 Wireless Module AT Command Manual Chapter 2 Extended AT Configuration Commands 2.1 Query minimun capability Syntax AT+GCAP Parameter None Description This extended-format command causes the MT2 to transmit one or more lines of information text in a specific format. The content is a list of additional capabilities command +<name>s, which is intended to permit the user of the MT2 to identify the minimum capabilities of the MT2. Return Value If the command succeeds, the display is:

OK Otherwise, the display is ERROR. An MT2 conforming to this standard shall include the following items, as a minimum, in the result code for the +GCAP command:* +CIS707, +MS, +ES,

+DS, +FCLASS Example AT+GCAP

+CIS707-A, +MS, +ES, +DS, +FCLASS OK Application 2-1 HUAWEI MC703 Wireless Module AT Command Manual 2.2 Query the manufacturer name Syntax AT +GMI Parameter None Description This command causes the T2 to transmit one or more lines of information text,determined by the manufacturer, which is intended to permit the user of the MT2 to identify the manufacturer. Typically, the text will consist of a single line containing the name of the manufacturer, but manufacturers may choose to provide more information if desired (for example, address, telephone number for customer service, and so on) Return Value If the command succeeds, the display is:

OK Otherwise, the display is ERROR. Example AT+GMI

+GMI: HUAWEI Technologies OK Application 2.3 Query Model Number Syntax AT+GMM 2-2 HUAWEI MC703 Wireless Module AT Command Manual Parameter None Description This command causes the MT2 to transmit one or more lines of information text, determined by the manufacturer, which is intended to permit the user of the MT2 to identify the specific model of the device. Typically, the text will consist of a single line containing the name of the product, but manufacturers may choose to provide any information desired Return Value If the command succeeds, the display is:

OK Otherwise, the display is ERROR. Example AT+GMM

+GMM: Model 199 OK Application 2.4 Query minimun capability Syntax Parameter AT+GMR None Description This command causes the MT2 to transmit one or more lines of information text, determined by the manufacturer, which is intended to permit the user of the MT2 to identify the version, revision level or date, or other pertinent information of the 2-3 HUAWEI MC703 Wireless Module AT Command Manual device. Typically, the text will consist of a single line containing the version of the product, but manufacturers may choose to provide any information desired. Return Value If the command succeeds, the display is:

OK Otherwise, the display is ERROR. Example AT+GMR

+GMR: S/W VER: QSC6020-APP-3350 1 [Aug 31 2007 01:00:00]

OK Application 2.5 Local Flow Control Syntax Parameter AT+IFC=<fct1>,<fct2>

<fct1>,<fct2>Flow control type 0 FCTL_OFF 1 XONXOFF_STRIP_FCTL 2 CTSRFR_FCTL 3 XONXOFF_NSTRIP_FCTL Description TE2-MT2 Local Flow Control.This extended-format compound parameter is used to control the operation of local flow control between the TE2 and MT2 ;.TIA/EIA/IS-131 states that this command only applies when the V.42 error control is being used, or when fallback to nonerror control mode is specified to include buffering and flow control. In this standard, this command applies independently of the use and setting of V.42. If V.42 is not used or not configured appropriately, data loss may occur. 2-4 HUAWEI MC703 Wireless Module AT Command Manual Return Value If the command succeeds, the display is:

OK Otherwise, the display is ERROR. Example AT+IFC=3,0 OK Application 2.6 Local Rate Reporting. Syntax AT+ILRR =<num>

Parameter

<num>

0 Mobile Accepts only OFF Description This extended-format numeric parameter controls whether the extended-format

+ILRR:<rate> information text is transmitted from the MT2 to the TE2. Return Value If the command succeeds, the display is:

OK Otherwise, the display is ERROR. Example AT+ILRR=0 2-5 HUAWEI MC703 Wireless Module AT Command Manual OK Application 2.7 Fixed RM Rate Syntax Parameter AT+IPR= <rate>

<rate> RM Rate 45, 50, 75, 110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 Note: Rate (45, 50, 75, 110, 150) is not supported currently. And the serial port of most computers can only supported with rate below 115200bps. So some values wont be show up when query it. Description This numeric extended-format parameter specifies the data rate at which the MT2 will accept commands, in addition to 1200 bit/s or 9600 bit/s (as required in EIA/TIA-602). It may be used to select operation at rates at which the MT2 is not capable of automatically detecting the data rate being used by the TE2. Return Value If the command succeeds, the display is:

OK Otherwise, the display is ERROR. Example AT+IPR=115200 OK 2-6 HUAWEI MC703 Wireless Module AT Command Manual Application 2-7 HUAWEI MC703 Wireless Module AT Command Manual Chapter 3 Fax Parameters 3.1 Service-class Selection Syntax AT+FCLASS=<value>

Parameter Value 0 Class-0 1

[Class-1 support unavailable]

mobile will return ERROR for

+FCLASS=1 2 Class-2.0 fax service Description Service-class selection parameter Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example AT+FCLASS=?

0,2.0 OK AT+FCLASS=1 ERROR AT+FCLASS?

2.0 OK 3-1 HUAWEI MC703 Wireless Module AT Command Manual 3.2 Pass Unrecognized Commands to the IWF Syntax AT+CXT=<value>

Parameter value:

0 Do not pass unrecognized commands to the IWF. 1 When detecting an unrecognized AT command, open transport layer connection and pass unrecognized command to the IWF. Description Pass unrecognized commands to the IWF. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example AT+CXT=?

+CXT: (0-1) OK AT+CXT=2 ERROR 3.3 Query Current Service Type Syntax AT+CAD?

Parameter None 3-2 HUAWEI MC703 Wireless Module AT Command Manual Description Query current Service type Return Value Example 0 If no service is available 1 If CDMA Digital service is available 2 If TDMA Digital service is available 3 If Analog service is available (values 4 to 255 reserved) AT+CAD?

+CAD: 1 OK 3.4 Um Interface Data Compression Reporting Syntax AT+CDR=<value>

Parameter value:

0 Do not report Um Interface Data Compression 1 Report Um Interface Data Compression Description Um Interface Data Compression Reporting. This extended-format numeric parameter controls whether the extended-format intermediate result code is transmitted by the MT2. The result code is the same as for the TIA/EIA/ IS-131

+DR: result code. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. 3-3 HUAWEI MC703 Wireless Module AT Command Manual Example AT+CDR?

+CDR: 0 OK AT+CDR=?

+CDR: (0-1) OK AT+CDR=1 OK AT+CDR=2 ERROR 3.5 Um Interface Data Compression Syntax Parameter AT+CDS=<v1>,<v2>,<v3>,<v4>

V1,v2,v3,v4 is the version of compression algorithm. Description Um Interface Data Compression.This extended-format compound parameter controls the V.42bis data compression function on the Um interface. Mobile will only accept 0 as a valid setting. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example AT+CDS?

+CDS: 0,1,2048,6 OK 3-4 HUAWEI MC703 Wireless Module AT Command Manual AT+CDS=1 ERROR AT+CDS=?

+CDS: (0),(1),(512-65535),(6-250) OK AT+CDS=0,1,4096, 7 OK 3.6 Set Rm Interface Protocol Syntax AT+CRM=<value>

Parameter value:

0 Asynchronous Data or Fax 1 Packet data service, Relay Layer Rm interface 2 Packet data service,Network Layer Rm interface,PPP 3 Packet data service,Network Layer Rm interface,SLIP 4 STU-III Service 5-127 Reserved for future use 128-255 Reserved for manufacturer-specific use Description Set Rm interface protocol. The default value for the parameter shall be 0 if this value is supported by the MT2. If 0 is not supported, the default value shall be manufacturer-specific. Mode selection occurs automatically based on data received. Return Value If the command is resolved correctly, the display is OK Otherwise, the display is ERROR. Example AT+CRM 3-5 HUAWEI MC703 Wireless Module AT Command Manual OK AT+CRM =?

+CRM: (0-2) OK AT+CRM?

+CRM: 0 OK 3-6 HUAWEI MC703 Wireless Module AT Command Manual Chapter 4 CDMA AT Parameter Commands 4.1 Query Serving System. Syntax AT +CSS?

Parameter None Description Query Serving System. Return Value

+CSS: <Band Class>, <Band>, <SID>

Band Class:

C The mobile station is registered with a cellular system. P The mobile station is registered with a PCS system. Band:

SID:

CA The mobile station is registered with a cellular A-band system. CB The mobile station is registered with a cellular B-band system. PA The mobile station is registered with a PCS A-band system. PB The mobile station is registered with a PCS B-band system. PC The mobile station is registered with a PCS C-band system. PD The mobile station is registered with a PCS D-band system. PE The mobile station is registered with a PCS E-band system. PF The mobile station is registered with a PCS F-band system. Z The mobile station is notregistered. 0-16383 The mobile station is registered with the system indicated. 99999 The mobile station is not registered. 4-1 HUAWEI MC703 Wireless Module AT Command Manual Example AT+CSS?

?, 14655 OK 4.2 Query Received Signal Quality Syntax AT +CSQ?

Parameter None Description Query Received Signal Quality. Returns the Signal Quality Measure <SQM> and the Frame Error Rate <FER>. Return Value

+CSQ:<SQM>, <FER>

Signal Quality Measure <SQM>

0-31 Signal Quality Measurement (see Note below). 99 SQM is not known or is not detectable. All other values are reserved. Frame Error Rate <FER>

0 <0.01%

1 0.01% to less than 0.1%

2 0.1% to less than 0.5%

3 0.5% to less than 1.0%

4 1.0% to less than 2.0%

5 2.0% to less than 4.0%

6 4.0% to less than 8.0%

7 8.0%

99 <FER> is not known or is not detectable. All other values are reserved. 4-2 HUAWEI MC703 Wireless Module AT Command Manual Example AT+CSQ?

+CSQ: 31, 99 OK 4-3 HUAWEI MC703 Wireless Module AT Command Manual Chapter 5 Packet Data Service AT Commands 5.1 Set Um Packet Data Inactivity Timer Syntax AT+CTA=<value>

AT+CTA=?

AT+CTA?

Parameter

<value>: ranges from 0 to 255 0: Traffic Channel not released during inactivity periods. 1-255: Release the Traffic Channel after <value> 1-second intervals have elapsed since last sending or receiving RLP data frames on the Um interface. 20: (default) The AT+CTA=? command is used to query the parameter range of the +CTA command. The AT+CTA? command is used to query the current value of the +CTA parameter. Description Set/Read/Test Um packet data inactivity timer. Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK Example AT +CTA=30 5-1 HUAWEI MC703 Wireless Module AT Command Manual OK 5.2 QNC Setting Syntax AT$QCQNC=<onoff>

Parameter

<onoff>

0: indicates to disable QNC (use Packet Data service option numbers)

(default for HSPD builds). 1: indicates to enable QNC (use Async Data Service Option numbers for Packet Data calls). Description Enable/disable QNC capability. Quick Net Connect (QNC) is a different means of performing basic packet data service. Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK Example AT$QCQNC=1 OK 5.3 Multiplex Option Control Syntax AT+CMUX=<A>,<B>

5-2 HUAWEI MC703 Wireless Module AT Command Manual Parameter

<A>: max. multiplex option to use for the Forward link. Valid numbers are 1 to F (hexadecimal).

<B>: max. multiplex option to use for the Reverse link. Valid numbers are 1 and 2. Default is C,2. Rules:

If A is omitted, it is assumed to have the same value as B. If A is not omitted, its value remains the same as the previous invocation (or the default). A and B must be either both odd or both even. If A & B are odd, then the phone will originate Data calls using Rate Set 1. If A & B are even, then the phone will originate Data calls using Rate Set 2. Description This command is used to set the maximum number of multiplex options for the forward and reverse links for MDR (HSPD) calls. Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK Example AT+CMUX=B,1 OK AT+CMUX=1 OK Application This command format is for MDR (HSPD) builds only. Non-MDR builds use the IS-707 +cmux format 1 (at+cmux=X where X can be 1 for Rate Set 1 or 2 for Rate Set 2). 5-3 HUAWEI MC703 Wireless Module AT Command Manual 5.4 SCRM Setting Syntax AT$QCSCRM=<onoff>

Parameter

<onoff>

0: indicates that Mobile never SCRMs. 1: indicates that Mobile can SCRM as needed. Description For IS2000 mobiles, this enables/disables the mobile from SCRMing. Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK Example AT$QCSCRM=0 OK Application Command only applies to SO 33 calls. This value is stored in NV. The default is 1. For MSM500, MSM5105, and MSM5100 ASICs only. 5.5 R-SCH Throttling Setting Syntax Parameter AT$QCTRTL=<onoff>

<onoff>:

5-4 HUAWEI MC703 Wireless Module AT Command Manual 0: indicates that Mobile never throttles R-SCH. 1: indicates that Mobile can throttle R-SCH as needed. Description For IS2000 mobiles, this enables/disables the mobile from throttling the R-SCH. The R-SCH is throttled when the assigned R-SCH rate is considered too high and could over utilize the CPU. Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK Example AT$QCTRTL=0 OK Application Command only applies to SO 33 calls. This value is stored in NV. Default is 1. For MSM500, MSM5105, and MSM5100 ASICs only. 5.6 DM Baud Rate Control Syntax Parameter AT$QCDMR=<value>

<value> : includes 19200, 38400, 57600, 115200, 230400, and 460800, indicating DM baud rate. Note: Only support these rates(38400, 57600, 115200) in this versions Description This command is to set DM baud rate. 5-5 HUAWEI MC703 Wireless Module AT Command Manual Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK Example AT$QCDMR=115200 OK 5.7 Medium Data Rate Control Syntax Parameter AT$QCMDR=<value>

<value> : ranges from 0 to 3, indicating Medium Data Rate. 0: indicates MDR Service Only. The mobile will originate with SOS 22 or SO 25. The mobile will not negotiate to any other service option if SO 22 and SO 25 are unavailable. 1: indicates MDR Service, if available. The mobile will originate with SO 22 or SO 25, but will negotiate to a Low-Speed Packet service option if MDR is not available. The mobile will not negotiate to SO 33. 2: indicates LSPD only. The mobile will originate a Low-Speed Packet call only. The mobile will not negotiate to SO 22, SO 25, or SO 33. 3: indicates SO 33, if available. The mobile will negotiate to MDR or Low-Speed Packet service options if SO 33 is not available. Description This command is to set Medium Data Rate (MDR) (also known as HSPD) setting. Return Value If the command fails, the display is:

ERROR 5-6 HUAWEI MC703 Wireless Module AT Command Manual If the command succeeds, the display is:

OK Example AT$QCMDR=3 OK 5-7 HUAWEI MC703 Wireless Module AT Command Manual Chapter 6 Proprietary AT Command Set 6.1 Transition To Diagnostics Monitor (DM) Operation Syntax AT $QCDMG Parameter None Description This command will return OK and then transition the phone serial port to DM mode. DM mode runs at 38.4 Kbps and uses a proprietary half-duplex protocol. Return Value If the command fails, the display is:

ERROR If the command succeeds, no display. OK Example AT$QCDMG 6-1 HUAWEI MC703 Wireless Module AT Command Manual 6.2 Protocol Revision In Use Syntax AT$QCPREV Parameter None Description This command will get the Protocol revision in use. Return Value Returns one of the following codes:

1: JSTD008, 3: IS_95A, 4: IS_95B, 6: IS_2000 Example AT$QCPREV 6 6.3 Dump Configuration Parameters Syntax AT&V Parameter None Description This command will dump the status of all AT parameters. This includes the single-letter parameters not otherwise readable, but does not include the +QC parameters. 6-2 HUAWEI MC703 Wireless Module AT Command Manual Return Value status of all AT parameters. Example AT&V

&C: 2; &D: 2; &F: 0; E: 1; L: 0; M: 0; Q: 0; V: 1; X: 4; Z: 0; S0: 0 S10: 14; S11: 95; S3: 13; S4: 10; S5: 8; S6: 2; S7: 50; S8: 2; S9: 6

+FCLASS: 0; +CFG: ""; +FCC: 0,1,0,0,0,0,0,0; +FIS: 0,1,0,0,0,0,0,0

+CDR: 0; +CDS: 0,1,2048,6; +CFC: 0; +CQD: 10; +CRC: 0; +CRM: 0; +CTA: 0

+CXT: 0; +DR: 0; +DS: 3,0,2048,6; +EB: 1,0,30; +EFCS: 1; +ER: 0

+ES: 3,0,2; +ESR: 1; +ETBM: 1,1,20; +FAA: 0; +FAP: 0,0,0; +FBO: 0

+FBU: 0; +FCQ: 1,0; +FCR: 0; +FCT: 1E; +FEA: 0; +FFC: 0,0,0,0; +FHS: 0

+FIE: 0; +FIP: 0; +FLI: ""; +FLO: 1; +FLP: 0; +FMS: 0; +FNR: 0,0,0,0

+FNS: ""; +FPA: ""; +FPI: ""; +FPP: 0; +FPR: 8; +FPS: 1; +FPW: ""

+FRQ: 0,0; +FRY: 0; +FSA: ""; +FSP: 0; +ICF: 3,3; +IFC: 2,2; +ILRR: 0

+IPR: 115200; +MA: ; +MR: 0; +MS: ; +MV18R: 0; +MV18S: 0,0,0; +CMUX: C,2

+CMEE: 2; +CMGD: 1 6.4 Set Data Service Option Number Set Syntax AT$QCSO=<number>

Parameter Number:

0 : pre-707 SO numbers (RS 1: Async 4, G3 Fax 5, packet 7; RS 2: Async 12, G3 Fax 13, packet 15) 1 : proprietary SO numbers (RS 1: Async 4, G3 Fax 5, packet 7; RS 2:

Async 0x8021, G3 Fax 0x8022, packet 0x8020) 2 : IS-707 SO numbers (RS 1: Async 0x1004, G3 Fax 0x1005, packet 0x1007; RS 2: Async 12, G3 Fax 13, packet 15) 6-3 HUAWEI MC703 Wireless Module AT Command Manual Description This command will Set Data Service Option number set; saves to non-volatile memory. Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK. Example AT$qcso=2 ok 6.5 Clear Mobile Error Log Syntax AT$QCCLR Parameter None Description This command will clear the mobile error log. Return Value If the command fails, the display is:

ERROR If the command succeeds, the display is:

OK. 6-4 HUAWEI MC703 Wireless Module AT Command Manual Example AT$QCCLR

$QCCLR:

OK 6-5

Product Description MC703 CDMA EV-DO Wireless Module V100R001 Issue Date 1.00 2009-08-24 HUAWEI TECHNOLOGIES CO., LTD. Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. Please feel free to contact our local office or company headquarters. Huawei Technologies Co., Ltd. Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China http://www.huawei.com support@huawei.com Address:

Website:

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Copyright Huawei Technologies Co., Ltd. 2009. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 2 of 45 MC703 CDMA EV-DO Wireless Module Product Description About This Document History Issue V1.00 Details Initial formal release. Date 2009-8-24 Author Zhang Jun Approved by zhou Zhaoxing Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 3 of 45 MC703 CDMA EV-DO Wireless Module Product Description Contents 1 Product Overview .........................................................................................................................9 1.1 About This Chapter .......................................................................................................................................... 9 1.2 Functions of the MC703 CDMA EV-DO Module............................................................................................ 9 1.3 Application Block Diagram of the MC703 CDMA EV-DO Module ............................................................. 11 2 Interface Description..................................................................................................................12 2.1 About This Chapter ........................................................................................................................................ 12 2.2 Signal Connector Interface............................................................................................................................. 12 2.2.1 Interface Signals.................................................................................................................................... 12 2.3 Antenna Interfaces.......................................................................................................................................... 15 2.3.1 Antenna Interface Circuits .................................................................................................................... 15 3 Electrical Features of the Interfaces.........................................................................................18 3.1 About This Chapter ........................................................................................................................................ 18 3.2 Application Extremes ..................................................................................................................................... 18 3.3 Operating and Storage Temperature............................................................................................................... 19 3.4 Levels of the I/O Interface ............................................................................................................................. 19 3.5 Power Supply Features................................................................................................................................... 19 3.5.1 Input Power Supply............................................................................................................................... 19 3.5.2 Operating Current ................................................................................................................................. 20 3.5.3 Power-on, Power-off, and Reset Processes ........................................................................................... 21 3.5.4 RTC Power Supply ............................................................................................................................... 23 3.6 Reliability Features ........................................................................................................................................ 24 3.7 ESD Features.................................................................................................................................................. 25 3.7.1 Overview............................................................................................................................................... 25 3.7.2 ESD Protection on the Antenna Interface ............................................................................................. 25 3.7.3 ESD Protection on the RUIM Card Interface........................................................................................ 25 4 Interface Applications................................................................................................................27 4.1 About This Chapter ........................................................................................................................................ 27 4.2 UART Interface.............................................................................................................................................. 27 4.3 RUIM Card Interface ..................................................................................................................................... 30 4.4 Audio Interfaces ............................................................................................................................................. 32 4.5 Power Supply Interface .................................................................................................................................. 33 4.6 USB Bus......................................................................................................................................................... 34 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 4 of 45 MC703 CDMA EV-DO Wireless Module Product Description 4.7 GPIO Interface ............................................................................................................................................... 34 4.8 ADC Interfaces............................................................................................................................................... 35 4.9 Status Indication Pins..................................................................................................................................... 35 4.9.1 LED Circuits ......................................................................................................................................... 35 4.10 Pin Sequence ................................................................................................................................................ 37 5 Mechanics.....................................................................................................................................38 5.1 Overview........................................................................................................................................................ 38 5.2 Mechanical Dimensions of the MC703 CDMA EV-DO Module................................................................... 38 5.3 Mechanical Dimensions of the B2B Connector ............................................................................................. 40 A Acronyms and Abbreviations..................................................................................................44 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 5 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figures Figure 1-1 Application block diagram of the MC703 CDMA EV-DO module................................................... 11 Figure 2-1 Dimensions of the RF connector........................................................................................................ 16 Figure 2-2 RF connector...................................................................................................................................... 17 Figure 3-1 Power-on process of the MC703 CDMA EV-DO module................................................................. 21 Figure 3-2 Normal power-off process of the MC703 CDMA EV-DO module.................................................... 22 Figure 3-3 Reset process of the MC703 CDMA EV-DO module........................................................................ 23 Figure 3-4 Recommended circuit for the ESD protection on the antenna interface ............................................ 25 Figure 3-5 Recommended circuit for ESD protection on the RUIM card interface ............................................ 25 Figure 4-1 Connections between the DCE and DTE........................................................................................... 28 Figure 4-2 Connections between the serial interface and the 3 V single-chip microcontroller ........................... 29 Figure 4-3 Connections for the 3-wire serial interface........................................................................................ 29 Figure 4-4 Electrical connections for the 9-wire serial interface with the flow control function........................ 30 Figure 4-5 Circuits of the RUIM card interface .................................................................................................. 31 Figure 4-6 Sequence of the pins of the RUIM card............................................................................................. 31 Figure 4-7 Sequence of the pins of a RUIM card seat......................................................................................... 31 Figure 4-8 Circuits of the first audio interface .................................................................................................... 33 Figure 4-9 Connections between the MC703 CDMA EV-DO module and the 8-ohm speaker........................... 33 Figure 4-10 Reference circuits for the design of the LDO power supply............................................................ 34 Figure 4-11 Reference circuits of the design of the ADC interfaces ................................................................... 35 Figure 4-12 Recommended circuits of the LED pins .......................................................................................... 36 Figure 4-13 Sequence of the pins on the MC703 CDMA EV-DO module.......................................................... 37 Figure 5-1 Mechanical dimensions of the MC703 CDMA EV-DO module (unit: mm)...................................... 39 Figure 5-2 Recommended shape of the toaling hole close to the B2B connector on the user application board 40 Figure 5-3 Mechanical dimensions of the MU103 module ................................................................................. 40 Figure 5-4 HRS DF12(3.0)-60DS-0.5V(86) connector on the MC703 CDMA EV-DO module......................... 41 Figure 5-5 HRS DF12(3.0)-60DP-0.5V(86) mating header on the user board.................................................... 41 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 6 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 5-6 Dimensions of the connector on the MC703 CDMA EV-DO module (unit: mm)............................. 42 Figure 5-7 Dimensions of the connector pad on the user interface board of the MC703 CDMA EV-DO module

.............................................................................................................................................................................. 42 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 7 of 45 MC703 CDMA EV-DO Wireless Module Product Description Tables Table 1-1 Product features................................................................................................................................... 10 Table 2-1 Functions of the signals on the signal connector interface .................................................................. 12 Table 2-2 RF performance of the main diversity antenna interface..................................................................... 17 Table 2-3 RF performance of the diversity antenna and GPS antenna interface ................................................. 17 Table 3-1 Extreme application values of the MC703 CDMA EV-DO module.................................................... 18 Table 3-2 Temperature ranges of the MC703 CDMA EV-DO module................................................................ 19 Table 3-3 Levels of the I/O interfaces on the MC703 CDMA EV-DO module (VDD_PX = 2.6 V) ....................... 19 Table 3-4 Input power supply range of the MC703 CDMA EV-DO module ...................................................... 19 Table 3-5 Operating current of the MC703 CDMA EV-DO module (TBD) ....................................................... 20 Table 3-6 Parameters in the power-on process and power-off process................................................................ 22 Table 3-7 VCOIN pin for the input of the RTC power supply............................................................................. 23 Table 3-8 Parameters of the RTC power supply pin ............................................................................................ 23 Table 3-9 Conditions and results of the part mechanical reliability tests............................................................. 24 Table 3-10 ESD performance .............................................................................................................................. 25 Table 4-1 Signals on UART1 of the MC703 CDMA EV-DO module................................................................. 28 Table 4-2 Pins of the RUIM card interface.......................................................................................................... 30 Table 4-3 Signals of the audio interfaces............................................................................................................. 32 Table 4-4 Signals of the USB interface................................................................................................................ 34 Table 4-5 Signals of the GPIO interfaces ............................................................................................................ 34 Table 4-6 Status of the LEDs............................................................................................................................... 36 Table 5-1 DF12 series that are compatible with the MC703 CDMA EV-DO module......................................... 41 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 8 of 45 MC703 CDMA EV-DO Wireless Module Product Description 1 Product Overview 1.1 About This Chapter is Th chapter provides an overview of the MC703 Code Division Multiple Evolution-Data Only (EV-DO) module, with the following information included:

Access (CDMA) Functions of the MC703 CDMA EV-DO Module

Application Block Diagram of the MC703 CDMA EV-DO Module 1.2 Functio s n of the MC703 CDMA EV-DO Module The MC703 CDMA EV-DO module has the following functions:

1900 MHz

Supporting the frequency bands of CDMA 800 MHz and/or CDMA Supporting the diversity receiving antenna Supporting the Global P Supporting voice, short message, Providing various user signal interfaces including the following:

ositioning System (GPS), optional data, and supplementary services

1. Power supply interface 2. nterface 3. Two analog audio interfaces 4. One Removable User Identity Module (RUIM) card One 9-wire serial i RUIM card) interface (supporting the 3.0 V 5. One full-speed Universal Serial Bus (USB) 2.0 interface 6. Eight General Purpose Input/Output (GPIO) interfaces 7. Two Analog-to-Digital Converter (ADC) interfaces

Providing two kinds of antenna interfaces: antenna pad and ante Supporting the standard AT command set and the extended AT command set of Huawei nna connector estriction of Hazardous Substances (RoHS) certification

Complying with the R T able 1-1 shows t he feat ures of the M C703 CDMA EV-DO module. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 9 of 45 Table 1-1 Product features Product Feature Description MC703 CDMA EV-DO Wireless Module Product Description Frequency bands CDMA: Double bands including 800 MHz and 1900 MHz Technical standards GPS: 1574.42 MHz to 1576.42 MHz CDMA 2000 1XRTT Compatible to CDMA IS-95 A/B 800/1900MHz CDMA 2000 1x EV-DO Rev.0 800/1900 MHz CDMA 2000 1x EV-DO Rev.A 800/1900 MHz Maximum transmit power CDMA 800 MHz: +23 dBm (Power Class 3) CDMA 1900 MHz: +23 dBm (Power Class 2) Operating temperature Normal operation temperature: 30 to +75 Extended operation temperature: 35 to +80 Storage temperature: 40 to +90 Power supply voltage 3.4 V to 4.2 V (The voltage of 3.8 V is recommended.) Power consumption

(current) Shutdown mode: < 10 uA Standby mode: < TBD mA Data services AT commands 60-pin board-to-board

(BTB) connector Operating current under the maximum power consumption: < 680 mA EV-DO Rev.A data services of up to DL 3.1 Mbit/s and UL 1.8 Mbit/s Standard AT command set Extended AT command set of Huawei One 9-wire Universal asynchronous receiver-transmitter (UART) interface One standard RUIM card interface (3 V) Eight GPIO interfaces One hardware reset in terface Two analog audio interfaces Two ADC interfaces Power supply interface Antenna interfaces Supporting the main antenna interface and receiving diversity antenna interface

(The GPS antenna shares the connector with the receiving diversity antenna.) Astron 51-3612-50-H RF connector and antenna pad Voice services FR, EFR, HR, and AMR voice coding Short message service

(SMS) Mobile Originated (MO) and Mobile Terminated (MT) Point-to-point broadcast and cell broadcast Short m essages in text mode Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 10 of 45 MC703 CDMA EV-DO Wireless Module Product Description Product Feature Description Supplementary services Caller ID display, call forwarding, call holding, call waiting, and three-way calling Physical characteristics Dimensions: 31 mm x 45 mm x 5 mm Weight: 9.80.2 g RoHS Complying with the RoHS standards CE certification Complying with the Conformite Europeenne (CE) standards (CE0168) 1.3 Application Block Diagram of the MC703 CDMA EV-DO Module Figure 1-1 shows the application block diagram of the MC703 CDMA EV-D O module. Figure 1-1 Application block diagram of the MC703 CDMA EV-DO module Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 11 of 45 MC703 CDMA EV-DO Wireless Module Product Description 2 Interface Description 2.1 About This Chapter This chapter describes the si following interfaces included:

gnal interfaces of the MC703 CDMA EV-DO module, with the Signal Connector Interface

Antenna Interfaces 2.2 Signal Connector Interface 2.2.1 Interface Sign als The MC703 CDMA EV-DO modu interface. Table 2-1 shows the function definition of the signals on the signa M 3 C70 CDMA EV-DO dule mo

. le adopts the 60-pin B2B connector as the external signal l connector interface of the Table 2-

1 Functio ns of the signals o n the signal connec tor interface No. Signal Name IO Function Remarks 1 2 3 4 5 VBAT P Power su pply input GND VBAT GND VBAT P P P P Ground Power su pply input Ground Power su pply input Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential he voltage ranges from 3.4 T V to 4.2 V. The voltage of 3.8 V is recommended. he voltage ranges from 3.4 T V to 4.2 V. The voltage of 3.8 V is recommended. he voltage ranges from 3.4 T V to 4.2 V. The voltage of 3.8 V is recommended. Page 12 of 45 No. Signal Name IO Function GND VBAT GND VBAT P P P P Ground Power supply input Ground Power supply input MC703 CDMA EV-DO Wireless Module Product Description Remarks The voltage ranges from 3.4 V to 4.2 V. The voltage of 3.8 V is recommended. The voltage ranges from 3 V to 4.2 V is recommended. V. The voltage of 3.8

.4 GND P Ground MODE_LED AO Mode indicator VCOIN P Input of the backup power supply STATUS_LED AO Status indicator VREG_MSMP P Output of the 2.6 V voltage NC

RESET_N DI Reset NC

TERM_ON DI Power-on NC

This pin is a current sink output. This pin can be connected to a button-type battery or a capacitor of larg e capacitance. This pin is a output. current sink es voltage for This pin provid peripherals. See Note 1. This pin must unconnected. be left Active low. This pin must unconnected. be left Active low. This pin must be left unconnected. UART1_RTS FORCE_LOAD_N UART1_RING UART1_RD UART1_DSR GPIO_7 UART1_CTS DO DI DO DI DO IO DO Request To Send (RTS) signal of UART1 Force-load signal A ctive low. Ringing signal of UART1 RD signal of UART1 eady (DSR) signal of Data set r UART1 GPIO 7 Clear to Sen UART1 d (CTS) signal of 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 13 of 45 No. Signal Name MC703 CDMA EV-DO Wireless Module Product Description Remarks Function TD signal of UART1 Data terminal r of UART1 eady (DTR) signal GPIO 8 Data carrier detect (DCD) signal of UART 1 IO DO DI IO DO UART1_TD UART1_DTR GPIO_8 UART1_DCD 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 NC

This pin must be left unconnected. GPIO_1 GPIO_2 MODULE_WAKE UP GPIO_3 USB_D-

GPIO_4 USB_D+

GPIO_5 IO IO DI IO IO IO IO IO HOST_WAKEUP DO GPIO_6 RUIM_CLK I2C_SCL VREG_RUIM I2C_SDA RUIM_IO EAR1_N RUIM_RST EAR1_P RUIM_IN IO DO IO P IO IO AO DO AO DI GPIO 1 GPIO 2 wake up the module by Signal to the host GPIO 3 USB data signal, negative GPIO 4 USB data signal, positive wake up the host by the GPIO 5 Signal to module GPIO 6 Clock signal of the RUIM interface Clock signal of the I2C bus Reserved Power supply of the RUIM interface Data signal of the I2C bus Reserved Data signal of the RUIM interface Negative pole of the first audio interface output of the Reset signal of the RUIM interface Positive pole of the o first audio interface utput of the Signal for detecting the presence of the RUIM card Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 14 of 45 No. Signal Name MIC1_N GND MIC1_P IO AI P AI SPKR_OUT_N AO GND SPKR_OUT_P P AO MC703 CDMA EV-DO Wireless Module Product Description Function Remarks Negative pole of the input of the first audio interface See section 4.4 "Audio Interfaces."

Ground Positive pole of the input of the first audio interface Negative pole of the output of th second audio interface e Ground Positive pole of the output of the second audio interface ADC_1 AI Input of the first ADC channel The input voltage ranges from V to 2.6 V. 0 MIC2_N AI Negative pole of the input of the second audio interface ADC_2 AI Input of the second ADC channel The input voltag 0 V to 2.6 V. e ranges from MIC2_P AI Positive pole of the input of the second audio interface 51 52 53 54 55 56 57 58 59 60 NOTE Note 1:

The VREG_MSMP pin exports the voltage of 2.6 V with the capability of 50 mA. Note 2:

Terms description:

AI: Analog Input. AO: Analog Output. P: Power/Ground. IO: Digital Input/Digital Output. DI: Digital Input. DO: Digital Output. NC: Not Connected. 2.3 Antenn 2.3.1 Anten a Interfaces na Interface Circuits The MC703 CDMA EV-DO module supports the main antenna interface and the diversity antenna interface. Both of these two antenna interfaces include two connection types, a RF connector and an antenna pad. Either of these two antenna connection types can be selected for use. The selected cable and antenna must have an impedance of 50 ohm. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 15 of 45 MC703 CDMA EV-DO Wireless Module Product Description The MC703 CDMA EV-DO module adopts the 51-3612-50-H RF connector supplied by Astron. Figure 2-1 shows the dimensions of the RF connector. Figure 2-1 Dimensions of the RF connector Figure 2-2 shows the RF connector. The two interfaces on the RF connector are pointed by the can red arrows. The antenna pad is located at the bottom of the RF connector. A coaxial cable d on the antenna pad for connecting an external antenna to the MC703 CDMA be soldere EV-DO module. The interface marked with M is the main diversity antenna interface and the interface marked with A is the interface used by both the diversity antenna and the GPS antenna. The RF connector and antenna pad can only be applied alternatively. When using the antenna pad, make sure that the surface of the soldering points is smooth to reduce the impact of the soldering on RF signals. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 16 of 45 Figure 2-2 RF connector MC703 CDMA EV-DO Wireless Module Product Description Table 2-2 and Table 2-3 show the RF performance of the antenna interfaces. Table 2-2 RF performance of the main diversity antenna interface Frequency Band Frequency Range (MHz) Maximum Transmit Power (dBm) Receiving Sensitivity of the Antenna Interface (dBm) Uplink Downlink Minimum Value Typical Value Maximum Value Minimum Value Typical Value Maximu m Value CDMA 800 824 to 849 869 to 894 CDMA 1900 1850 to 1910 1930 to 1990 23 23 24.5 24.5 26 26

107.5 106 107.5 106 Table 2-3 RF performance of the diversity antenna and GPS antenna interface Frequency Band Frequency Range

(MHz) Receiving Sensitivity of the Antenna Interface (dBm) CDMA 800 869 to 894 CDMA 1900 1930 to 1990

< 106

< 106 GPS 1575.42

< 155.8 (50% Time) The antenna whose gain value is According to the layout of the circuit board, adjust the reference value of each component. You can connect an inductor of 68 nH to 100 nH for electrostatic discharge (ESD) protection to the ground. Pay special attention to the impedance matching of the antenna and ESD protection capability or lightning protection capability. less than 1 dBi is recommended. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 17 of 45 MC703 CDMA EV-DO Wireless Module Product Description 3 Electrical Features of the Interfaces 3.1 About This Chapter es of the interfaces of the MC703 CDMA EV-DO d This chapter describes the electrical featur mo ule with the following featur

Application Extremes

Operating and Storag

e Temperature O Interface es included:

Levels of the I/

Power Supp Reliability Features ESD Features ly Features

This chapter describes mainly EV-DO module. the electrical features of the external interfaces of the MC703 CDMA 3.2 Applic ation Extremes Table 3-1 shows the extreme application values of the MC703 CDMA EV-DO a voltage lower or higher than the limit values is used, a permanent damag he MC703 C MA EV-DO m t odule. D module. When e may be caused to able 3-1 T Extre me application values of th MC70 e 3 CDMA EV-

DO m odule Parameter Description Minimum Value Maximum Value Unit age of the MC703 Input volt CDMA EV-DO module Input voltage of the I/O interface 0.5 0.5 5.0 5.0 V V VBAT VIN Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 18 of 45 MC703 CDMA EV-DO Wireless Module Product Description 3.3 Operat ing and Storage Temperature ble 3-2 sho Ta ws the temperature ranges of the MC703 CDMA EV-DO module. able 3-2 Temperature ranges o T f the MC703 CDMA EV-DO mo dule Parameter Minimum Value Maximum Value Unit Normal operating temperature Extended operating temperature Storage temperature 30 35 40 75 80 90 3.4 Levels of the I/O Interface ble 3-3 shows the levels of the I/O i Ta nterfaces on the MC703 CDM A EV-DO module. Table 3-3 Leve ls of the I/O interfaces on the M C703 C DMA EV-DO module

(V PX = V) 2.6 DD_ Parameter Description M inim um Value Maximum Value Unit High-level input voltage 0.65 x VDD_PX Low-level input voltage 0.3 High-level outpu t voltage VDD_PX 0.45 Low-level output voltag e Current leakage during high-level input Current leakage during low-level input Input capacitance 0

1

VDD_P X + 0.3 0.3 5 x VDD_PX VDD_PX 0. 45 1

7 V V V V A A pF VIH VIL VOH VOL IIH IIL CIN 3.5 Power Supply Features 3.5.1 Input P ower Supply ble 3-4 sho Ta ws the input power sup ply ra nge of the MC 703 CD MA EV-DO modul e. Tab le 3-4 Input power supply range of the MC703 CDMA EV-DO module Parameter Minimum Value Typical Value Maximum Value Unit VBAT 3.4 3.8 4.2 V Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 19 of 45 MC703 CDMA EV-DO Wireless Module Product Description The time when any interface on the MC703 CDMA EV-DO module is powered on must not be earlier than the time when the module is pow EV-DO module may b e abnormal or damaged. ered on. Otherwise, the MC703 CDMA 3.5.2 Opera ting Current Table 3-5 shows the operating current of the MC703 CDMA EV-DO module. able 3-5 Operatin T g curr ent of the M 3 CDMA EV-D C70 O mo dule (TBD) Operating Mode Minimum V alue Typical Value Maximum Value Unit Idle state Calling state EV-DO data transmission state Off state

TBD TBD TBD TBD

TBD mA mA mA A Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 20 of 45 MC703 CDMA EV-DO Wireless Module Product Description 3.5.3 Power-on, Power-off, and Reset Processes When the voltage of the power supplied to the MC703 CDMA EV-DO module is higher than 3.4 V and the TERM_ON pin is driven low for at least 300 ms, the MC703 CDMA EV-DO module can be powered on. Figure 3-1 shows the power-on process of the MC703 CDMA EV-DO module. Figure 3-1 Power-on process of the MC703 CDMA EV-DO module If the power supply with the lower voltage (for example 3.4 V) is used, the cable connecting the external power supply and the module should be as short as possible and the power supply input should be configured with a capacitor of higher than 1000 F. Otherwise, the voltage that is actually imported to the MC703 CDMA EV-DO module may be lower than 3.4 V, resulting in the deterioration of RF indicators and unstable operation of the MC703 CDMA EV-DO module. The power-off process is classified into normal power-off and urgent power-off. Normal power-off An external CPU drives the TERM_ON pin low for more than 3s. Then, the MC703 CDMA EV-DO module is normally powered off. During the normal power-off process, the MC703 CDMA EV-DO module can save information and log out of the network. Figure 3-2 shows the normal power-off process. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 21 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 3-2 Normal power-off process of the MC703 CDMA EV-DO module Table 3-6 shows the parameters in the power-on process and power-off process. Table 3-6 Parameters in the power-on process and power-off process Parameter Minimum Value Typical Value Maximum Value Unit tsettle treset0 treset1 toff 0.36 10.72 400 7.27 6.36 26.72 500 10.6 10.36 40.72 600 15.6 ms ms ms ms Urgent power-off An external CPU sends the AT%MSO command to the MC703 CDMA EV-DO module to directly cut off the power supply to the VBAT pin. Then, the MC703 CDMA EV-DO module can be directly powered off. During the urgent power-off process, the MC703 CDMA EV-DO module cannot perform the operation of logging out of the network. For the details about the AT%MSO command, refer to the HUAWEI MC703 Wireless Module AT Command Interface Specification. When the RESET_N pin is driven low for 50 ms, the MC703 CDMA EV-DO module can be reset. Figure 3-3 shows the reset process of the MC703 CDMA EV-DO module. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 22 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 3-3 Reset process of the MC703 CDMA EV-DO module The RESET_N pin is sensitive to interference. Therefore, the lines on the interface board of the MC703 CDMA EV-DO module should be not longer than 2 cm. Otherwise, the MC703 CDMA EV-DO module may be reset because of interference. 3.5.4 RTC Power Supply The power supply pin for the real-time clock (RTC) can obtain current from the VBAT pin through software enabling to charge the backup battery of the RTC. The power supply input is monitored by a CPU. The MC703 CDMA EV-DO module defines the VCOIN pin for the input of the backup power supply on the 60-pin B2B connector to implement the power supply input for the RTC. Table 3-7 VCOIN pin for the input of the RTC power supply PIN Name I/O Function Remarks 12 VCOIN P Input of the backup power supply This pin is connected to a button-type battery or a capacitor of large capacitance. If the RTC backup battery is not used, you can connect the pin to the primary power supply, or use an electrolytic capacitor of large capacitance. Table 3-8 Parameters of the RTC power supply pin Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 23 of 45 3.6 Reliability Features MC703 CDMA EV-DO Wireless Module Product Description Table 3-9 shows the conditions and results of the part mechanical reliability tests performed on the MC703 CDMA EV-DO module. Table 3-9 Conditions and results of the part mechanical reliability tests Test Item Test Condition Random vibration Shock test Temperature shock Damp heat cyclic Low-temperature operation High-temperature operation Low-temperature storage High-temperature storage Salt spray test Frequency range: 5 Hz to 20 Hz, PSD: 1.0 m/s3;

Frequency range: 20 Hz to 200 Hz, 3 dB/oct;

Three axial directions with one hour for each direction Half sine wave shock Acceleration: 20 g Shock period: 11 ms Six axial directions with one shock in each direction

( x, y, and z) Low temperature: 40C2C High temperature: 85C2C Changeover time: < 30s Test duration: 1 hour Repetition times: 100 High temperature: 55C2C Low temperature: 25C2C Humidity: 95%

Repetition times: 4 Test duration: 12 hours + 12 hours Temperature: 30C2C Test period: 24 hours Temperature: 75C2C Test period: 24 hours Temperature: 60C2C Test period: 24 hours Temperature: 90C2C Test period: 24 hours Temperature: 35C Density of the NaCl solution: 5%1%

Spraying duration: 48 hours Duration of exposing the module to the temperature of 35 C: 16 hours Test Standard IEC 68-2-6 TIA/EIA 603 3.3.5 GB/T15844.2 4.1 IEC 68-2-14 Na IEC 68-2-30 Db IEC 68-2-1 Ab IEC 68-2-2 Bb IEC 68-2-1 Ab IEC 68-2-2 Bb IEC 68-2-11 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 24 of 45 3.7 ESD Features 3.7.1 Overview MC703 CDMA EV-DO Wireless Module Product Description When the MC703 CDMA EV-DO module is in use, the ESD protection should be considered. The ESD performance of the MC703 CDMA EV-DO module has been tested according to the EN61000-4-2 standard. Table 3-10 shows the test results. Table 3-10 ESD performance Interface Air Discharge Contact Discharge RUIM card interface USB interface 8000 V 8000 V 4000 V 4000 V 3.7.2 ESD Protection on the Antenna Interface The antenna interface of the MC703 CDMA EV-DO module is sensitive to ESD. Poor ESD protection may cause permanent damage to internal RF components. Figure 3-4 shows the recommended circuit for the ESD protection on the antenna interface. Figure 3-4 Recommended circuit for the ESD protection on the antenna interface 3.7.3 ESD Protection on the RUIM Card Interface Figure 3-5 shows the recommended circuit for the ESD protection on the RUIM card interface of the MC703 CDMA EV-DO module. The transient voltage suppressor (TVS) diode should be placed as close to the RUIM card seat as possible. Figure 3-5 Recommended circuit for ESD protection on the RUIM card interface Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 25 of 45 MC703 CDMA EV-DO Wireless Module Product Description Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 26 of 45 MC703 CDMA EV-DO Wireless Module Product Description 4 Interface Applications pplications of the interfaces of the MC703 CDMA EV-DO module, rfaces included:

th 4.1 About This Chapter This chapter describes the a the following inte wi

UART Interface

RUIM Car

Audio Interfaces terface Power Supply In

USB Bus

GPIO Interface

ADC Interfaces

d Interface Status Indication Pins Pin Sequence

4.2 UART Interface rol function and a maximum transmission rate The MC703 CDMA EV-DO module has one UART interface, that is, UART1. UART1 is 9-wire serial interface supporting the flow cont of 4 Mbit/s. UART1 supports data services. You can set up the Point-to-Point Protocol (PPP) dial-up connection for data services through UART1. UART1 supports programmable data width, data stop bit, and parity check (or no parity check). In addition, UART1 supports a maximum baud rate of 230.4 kbps and a default baud rate of 115.2 kbps. The set baud rate can be saved even if the interface is powered off. a Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 27 of 45 Figure 4-1 Connections between the DCE and DTE MC703 CDMA EV-DO Wireless Module Product Description Table 4-1 shows the definitions of the interface signals. Table 4-1 Signals on UART1 of the MC703 CDMA EV-DO module Pin Number Signal Name Description Feature Direction UART1_TD Data transmission end of the module The Date Terminal Equipment (DTE) receives serial data. UART1_RD Data receiving end of the module The DTE transmits serial data. UART1_RING Ringing indication of the module The DTE is notified of a remote call. UART1_RTS RTS on the module The DTE notifies the Data Communications Equipment (DCE) of sending requests. UART1_DTR DTR on the module The DTE is ready. UART1_DSR DSR on the module The DCE is ready. UART1_CTS CTS on the module The DCE switches to the receiving mode. DCEDTE DTEDCE DCEDTE DCEDTE DTEDCE DCEDTE DTEDCE UART1_DCD DCD on the module Data links are connected. DCEDTE 27 23 22 20 28 24 26 30 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 28 of 45 MC703 CDMA EV-DO Wireless Module Product Description When MC703 CDMA EV-DO module is connected to a 3V single-chip microcontroller. a 1000-ohm resistor should be added between the pin UART1_RD and the pin TXD of the microcontroller. Figure 4-2 Connections between the serial interface and the 3 V single-chip microcontroller You can use a Category 232 chip to connect the MC703 CDMA EV-DO module to a standard RS-232-C interface. In the case of a 3-wire serial interface, the MAX3232 chip is recommended. The UART1-RD pin of the module connects to the TXD pin of the DTE after being converted through the MAX3232 chip, and the TXD pin of the DTE connects to the UART1_TD pin of the module after being converted through the MAX232 chip. Figure 4-3 Connections for the 3-wire serial interface In the case of a full-serial interface, the MAX3232, SP3238, or MAX3238 chip is recommended. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 29 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 4-4 Electrical connections for the 9-wire serial interface with the flow control function 4.3 RUIM Card Interface The MC703 CDMA EV-DO module can connect to a 3 V or a 1.8 V RUIM card. Table 4-2 shows the signals of the RUIM card interface. The level of the RUIM card interface is 3 V or 1.8 V. Table 4-2 Pins of the RUIM card interface Pin Number Signal Name Description VREG_RUIM Power supply of the RUIM card RUIM_RST RUIM_CLK RUIM_IO GND Reset signal of the RUIM card Clock signal of the RUIM card Data signal of the RUIM card Ground 44 48 42 46 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 30 of 45 Figure 4-5 Circuits of the RUIM card interface MC703 CDMA EV-DO Wireless Module Product Description Figure 4-6 Sequence of the pins of the RUIM card Figure 4-7 Sequence of the pins of a RUIM card socket The typical rate of the RUIM card interface is about 3.25 MHz. Therefore, the RUIM card seat should be as close to the module interface as possible and the line should not exceed 10 cm. This prevents the communications quality of signals from being affected by serious waveform distortion because of too long lines. Ground lines should be used to enclose the lines used for transmitting RUIM_CLK signals and RUIM_IO signals. To filter out the interference from antenna signals, you need to add a 0.1F or a 0.22F capacitor to the RUIM_VCC signal and a 33pF capacitor to the RUIM_CLK, RUIM_IO, and RUIM_RST signals based on the GND network. In addition, you need to add TVS diodes to Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 31 of 45 these four signals for ESD protection. The TVS diodes should be placed as close to the RUIM card socket as possible. MC703 CDMA EV-DO Wireless Module Product Description 4.4 Audio Interfaces The MC703 CDMA EV-DO module provides two audio channels and each channel includes one input and one output interfaces. Table 4-3 shows the signals of the audio interfaces. Table 4-3 Signals of the audio interfaces Pin Number Signal Name Description 51 53 47 49 58 60 54 56 MIC1_N MIC1_P EAR1_N EAR1_P MIC2_N MIC2_P Negative pole of the input of the first audio interface Positive pole of the input of the first audio interface Negative pole of the output of the first audio interface Positive pole of the output of the first audio interface Negative pole of the input of the second audio interface Positive pole of the output of the second audio interface SPKR_OUT_N Negative pole of the output of the second audio interface SPKR_OUT_P Positive pole of the output of the second audio interface The input and output signals on the first audio interface are fully differential and thus have good performance of resisting RF interference. This audio interface can be used in handset connection mode without any external audio frequency amplifier (AFA). As the audio signals are in differential pairs, the lines on the printed circuit board (PCB) should be equidistantly laid in parallel with each other. The lines should be as short as possible, the filter circuits of the two sides should be symmetric, the differential pair signals should be close to each other, and the grounding is required. The differential pair signals of the audio output and the differential pair signals of the audio output should be effectively separated through grounding. In addition, the signals should be away from the circuits of the power supply, RF, and antenna. Differentiate and isolate functional modules during PCB design of the application board which the MC703 CDMA EV-DO module is applied on. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 32 of 45 Figure 4-8 Circuits of the first audio interface MC703 CDMA EV-DO Wireless Module Product Description Differential signals are transmitted on the first audio interface. By reserving a place for the resistor in the loop, you can adjust the quality and volume of the voice. It is recommended that you place a TVS on the related interface to provide protection against ESD and protect components such as the internal integrated circuit (IC) component. The output signals of the second audio interface can directly drive an 8-ohm speaker. Figure 4-9 Connections between the MC703 CDMA EV-DO module and the 8-ohm speaker 4.5 Power Supply Interface An external power supply with the voltage of 3.3 V to 4.2 V (the typical value is 3.8 V) powers the MC703 CDMA EV-DO module through the VBAT pin. When the network signals are weak, the antenna transmits signals with the highest power and the maximum transient current can be up to 1.1A. In this case, it is recommended that you use a low dropout (LDO) regulator or a switching-mode power supply whose current is higher than 1.1 A. Considering the voltage drop that may occur during the transmission with high power, you can add a large capacitor on the power supply interface of the module. The electrolytic capacitor of over 220 F is recommended. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 33 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 4-10 Reference circuits for the design of the LDO power supply 4.6 USB Bus Working with the drives of a PC, the USB interface can be mapped to a serial interface of the PC. The USB interface is mainly used for updating module applications, capturing software logs, and testing module applications. Table 4-4 Signals of the USB interface Pin Number Signal Name 36 38 USB_D-

USB_D+

Description USB data line USB data line 4.7 GPIO Interface The MC703 CDMA EV-DO module supports up to eight GPIO interfaces. Table 4-5 shows the signals of the GPIO interfaces. Table 4-5 Signals of the GPIO interfaces Pin Number Signal I/O Description 32 33 35 37 39 41 GPIO_1 GPIO_2 GPIO_3 GPIO_4 GPIO_5 GPIO_6 I/O I/O I/O I/O I/O I/O GPIO 1 GPIO 2 GPIO 3 GPIO 4 GPIO 5 GPIO 6 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 34 of 45 MC703 CDMA EV-DO Wireless Module Product Description Pin Number Signal 25 29 GPIO_7 GPIO_8 I/O I/O I/O Description GPIO 7 GPIO 8 4.8 ADC Interfaces The MC703 CDMA EV-DO module supports two ADC interfaces for monitoring analog variables, such as the environmental temperature variable. Figure 4-11 Reference circuits of the design of the ADC interfaces 4.9 Status Indication Pins 4.9.1 LED Circuits The MC703 CDMA EV-DO module supplies two signals which can be used to light the LEDs. One LED indicates the network mode and the other LED indicates the signal status. The LEDs are controlled by the current sink. The high voltage is the voltage of VBAT (with the typical value of 3.8 V). Table 4-6 shows the status of the LEDs. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 35 of 45 Table 4-6 Status of the LEDs Operating Mode of the MC703 CDMA EV-DO Module LED Status MC703 CDMA EV-DO Wireless Module Product Description The module is searching for a network or no network is available. The LED flashes once. (The LED is on for 100 ms and off for 0.9s. Each cycle lasts 1s.) The module finds out a 2G network. The module finds out a 3G network. The module is processing the CDMA 1X data services through the dial-up service. The module is processing the EV-DO data services through the dial-up service. The module is in factory test mode (FTM). The module is upgrading software. The LED flashes once. (The LED is on for 100 ms and off for 1.9s. Each cycle lasts 2s.) The LED flashes once. (The LED is on for 100 ms and off for 2.9s. Each cycle lasts 3s.) The LED flashes twice. (The LED is on for 100 ms and off for 300 ms, and then on for 100 ms and off for 1.5s. Each cycle lasts 2s.) The LED flashes twice. (The LED is on for 100 ms and off for 200 ms, and then on for 100 ms and off for 600 ms. Each cycle lasts 1s.) The LED flashes slowly. (The LED is on for 1s and off for 1s. Each cycle lasts 2s.) The LED flashes quickly. (The LED is on for 100 ms and off for 100 ms. Each cycle lasts 0.2s.) Figure 4-12 shows the recommended circuits of the LED pins. Figure 4-12 Recommended circuits of the LED pins Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 36 of 45 4.10 Pin Sequence MC703 CDMA EV-DO Wireless Module Product Description Figure 4-13 shows the sequence of the pins on the 60-pin B2B connector of the MC703 CDMA EV-DO module. Figure 4-13 Sequence of the pins on the MC703 CDMA EV-DO module 59 60 1 2 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 37 of 45 MC703 CDMA EV-DO Wireless Module Product Description 5 Mechanics 5.1 Overview This chapter describes the mechanical dimensions of with the following dimensions included:

Mechanical Dimensions of the MC703 CDMA EV-DO Module

Mechanical Dimensions of the B2B Connector the MC703 CDMA EV-DO module, 5.2 Mechanical Dimensions of the MC703 CDMA EV-DO Module Dimensions: 310.20 mm x 450.20 mm x 50.20 mm Weight: 9.8 (0.2) g Figure 5-1 shows the mechanical dimensions of the MC703 CDMA EV-DO module. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 38 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 5-1 Mechanical dimensions of the MC703 CDMA EV-DO module (unit: mm) If the MC703 CDMA EV-DO module is required to be compatible with other products, such as the MU103 module, it is recommended that the mounting hole close to the B2B connector on the user application board should be designed to be track-shaped, as shown in Figure 5-2. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 39 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 5-2 Recommended shape of the toaling hole close to the B2B connector on the user application board Figure 5-3 Mechanical dimensions of the MU103 module 5.3 Mechanical Dimensions of the B2B Connector The MC703 CDMA EV-DO module adopts the DF12(3.0)-60DS-0.5V(86) 60-pin B2B connector supplied by HRS, with the pin spacing of 0.5 mm, the stacking height of 3 mm, and pluggable times of less than 50. The connector can be mated with the DF12(3.0)-60DP-0.5V(86), DF12(3.5)-60DP-0.5V(86), DF12(4.0)-60DP-0.5V(86), and DF12(5.0)-60DP-0.5V(86) supplied by HRS. Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 40 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 5-4 HRS DF12(3.0)-60DS-0.5V(86) connector on the MC703 CDMA EV-DO module Figure 5-5 HRS DF12(3.0)-60DP-0.5V(86) mating header on the user board Table 5-1 DF12 series that are compatible with the MC703 CDMA EV-DO module Product Model Stacking Height

(mm) HRS Number Connector used on the MC703 CDMA EV-DO module DF12(3.0)-60DS-0.5V(86) 3.0 537-0611-1-86 Headers on the interface board DF12(3.0)-60DP-0.5V(86) 3.0 537-0731-3-86 Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 41 of 45 MC703 CDMA EV-DO Wireless Module Product Description Figure 5-6 Dimensions of the connector on the MC703 CDMA EV-DO module (unit: mm) For more information about the connectors of Hirose, access http://www.hirose-connectors.com. Figure 5-7 Dimensions of the connector pad on the user interface board of the MC703 CDMA EV-DO module Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 42 of 45 MC703 CDMA EV-DO Wireless Module Product Description Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 43 of 45 MC703 CDMA EV-DO Wireless Module Product Description A Acronyms and Abbreviations AMR BER BTS B2B CSD DSP DCE DTE DTR DTX EFR EGSM EMC ESD GMSK IMEI I/O ISO ITU kbps LED MO MT Adaptive Multi-rate Bit Error Rate Base Transceiver Station Board-to-Board Connector Circuit Switched Data Digital Signal Processor Data circuit-terminating equipment Data terminal equipment Data Terminal Ready Discontinuous Transmission Enhanced Full Rate Enhanced GSM Electromagnetic Compatibility Electrostatic Discharge Gaussian Min imum Shift Keying International Mobile Equipment Identi ty Input/Output International Standards Organization International Telecommunications Union kbits per second Light Emitting Diode Mobile Originated Mobile Terminated Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 44 of 45 MC703 CDMA EV-DO Wireless Module Product Description Negative Temperature Coefficient Personal Cellular System Power Control Level Personal Communication System Point-to-point protocol Quadrate Phase Shift Keying Real Time Clock Universal asynchronous receiver-transmitter Evolution-Data Only Voltage Standing Wave Ratio NTC PCS PCL PCS PPP QPSK RTC UART EV-DO VSWR Issue 1.00 (2009-08-24) Huawei Proprietary and Confidential Page 45 of 45