FCC ID: DMOCDHDGG Dect Headset

D 10 series Wireless DECT headset system Instruction manual Contents Contents Important safety information ....................................................................... 2 Scope of delivery ............................................................................................. 4 Base stations with components ................................................................... 4 Headset with components ............................................................................ 4 Product overview ............................................................................................ 5 Product overview of the base station ........................................................ 5 Product overview of the headset ................................................................ 6 Overview of the buttons ............................................................................... 7 Overview of the LEDs ..................................................................................... 8 Setting up and connecting the base station ............................................... 9 Setting up the base station .......................................................................... 9 Connecting the base station to the mains power supply ....................... 9 Connecting the base station to a fixed line phone ................................10 Connecting the base station to an optional electronic hook switch control (EHS) ........................................12 Connecting the base station to a computer ............................................13 Charging the headset before first use ......................................................13 Individually adjusting the headset ............................................................ 14 Using the headset with the ear hook .......................................................14 Using the headset with the headband .....................................................15 Configuring the headset system ................................................................ 16 Adjusting the headset system using the DIP switches .........................16 Adjusting the audio signal by means of the dial tone ..........................18 Adjusting the volume of the transmission ..............................................19 Adjusting the volume of the ring tone .....................................................19 Adjusting the automatic audio transmission Auto Audio ................20 Making calls using the headset .................................................................. 21 Adjusting the volume ..................................................................................21 Muting the headsets microphone ............................................................22 If you leave the DECT range ........................................................................22 Calling via the fixed line phone using the headset ................................23 Calling via the computer using the headset ............................................25 Making a conference call .............................................................................27 Charging the headset and storing the headset system .......................... 30 Charging the headset ...................................................................................30 Switching the headset system off during extended non-use .............32 Sharing a workplace ..................................................................................... 33 Cleaning and maintaining the headset system ........................................ 34 Replacing the ear pads ................................................................................35 Replacing the headsets rechargeable battery .......................................36 If a problem occurs ....................................................................................... 37 Specifications ................................................................................................ 38 Manufacturer Declarations .......................................................................... 40 D 10 series | 1 Important safety information Important safety information Please read this instruction manual carefully and completely before using the product. Always include this instruction manual when passing the product on to third parties. Do not use an obviously defective product. Preventing damage to health and accidents Do not listen at high volume levels for long periods of time to prevent hearing damage. Always maintain a distance of at least 3.94 (10 cm) between the ear cups and the cardiac pacemaker or implanted defibrillator since the product generates permanent magnetic fields. Keep the product, accessories and packaging parts out of reach of children and pets to prevent accidents and choking hazards. Do not use the product in situations which require special attention

(e.g. in traffic). Preventing damage to the product and malfunctions Always keep the product dry and do not expose it to extreme temperatures (hairdryer, heater, extended exposure to sunlight, etc.) to avoid corrosion or deformation. Only use attachments/accessories supplied or recommended by Sennheiser. Only clean the product with a soft, dry cloth. Unplug the power supply unit from the wall socket to completely disconnect the product from the mains power supply. Do not short-circuit the contacts of the product. Make sure that no metal objects (e.g. paper clips, hair pins, earrings) come into contact with the interfaces and contacts. Only use the base station or the CH 10 charger for charging D 10 series headsets. Intended use/Liability The headset system can be used for calling and together with a computer

(VoIP) and/or a telephone for audio input/output and is intended for professional office or call center use. It is considered improper use when this product is used for any application not named in this instruction manual. Sennheiser does not accept liability for damage arising from abuse or misuse of this product and its attachments/accessories. The risk is to be borne by the user. Sennheiser is not liable for damages to USB devices that are not consistent with the USB specifications. Sennheiser is not liable for damages resulting from the loss of connection due to flat or overaged rechargeable batteries or exceeding the DECT transmission range. D 10 series | 2 Important safety information Safety instructions for Lithium-Polymer rechargeable batteries In extreme cases, abuse or misuse of rechargeable batteries can lead to:

WARNING explosion, fire development, heat generation or smoke/gas development. Only charge rechargeable batteries at ambient temperatures between 10C/50F and 40C/104F. Dispose of defective products with built-in rechargeable batteries at special collection points or return them to your specialist dealer. Only use rechargeable batteries recommended by Sennheiser and the appropriate chargers. Do not heat above 70C/158F, e.g. do not expose to sunlight or throw into a fire. When not using rechargeable batteries for extended periods of time, charge them regularly

(about every 3 months). Switch battery pack-powered products off after use. 3 | D 10 series Scope of delivery D 10 BS USB D 10 BS USB ML A D 10 BS Phone B OR Scope of delivery The D 10 series base stations marked with ML in their name are optimized for Microsoft Lync. Base stations with components D 10 BS USB D 10 BS USB ML D 10 BS Phone for computer for computer, optimized for Microsoft Lync for fixed line phone USB Phone EU/UK/US/AU Safety Guide Quick Guide Safety Guide Quick Guide The scope of delivery includes depending on the product purchased a base station and/or a headset with corresponding components. Headset with components monaural, with different wearing styles D 10 HS D 10 HS A&B Quick Guide D 10 series | 4 Product overview Product overview Product overview of the base station Overview of the front Magnetic holder with charging contacts Link LED Incoming call LED Charge status LED Headset holder Overview of the rear Phone version 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode Extra Settings D 10 Phone 1 2 3 4 5 6 uto Link OFF d ge dard Wideban dset g Ran Lifter Stan Han Lon A 1 2 3 4 5 6 d N ge HSG Limiter MSH ban uto Link O Short Ran D Narrow A Fast Link PC socket (USB) DC IN socket Phone socket Handset socket ACC socket Sticker for DIP switches

(located underneath the headset holder) 3 6 9 0 Mic. Volume 2 3456 1 A B C Mode Settings Microphone volume control Set button DIP switch row 1 to 6 ABC switch 5 | D 10 series Product overview Overview of the rear USB version 3 6 9 0 Ring Volume 1 2 3456 Settings 3 6 9 0 Ring Volume 1 2 3456 Settings Extra Settings D 10 USB Ringtone OFF 2 1 3 d 1 2 3 4 5 6 uto Link OFF ge dard Wideban gtone g Ran Stan Rin Lon A N ge 1 2 3 4 5 6 d Limiter ban uto Link O gtone Short Ran Narrow Rin A Ring tone volume control Set button DIP switch row 1 to 6 Loudspeaker PC socket (USB) DC IN socket Sticker for DIP switches

(located underneath the headset holder) Product overview of the headset A 0 9 1 8 7 6 5 1 Headband 2 Headset holder 3 Ear pad 4 Microphone 5 Headset LED 6 Link button 2 3 4 7 Audio button: volume +/, mute 8 Ear hook, adjustable 9 Charging contacts 0 Battery compartment A Ear piece D 10 series | 6 Overview of the buttons Action Press the Link button 7 Press and hold the Link button 7 for 5 seconds Push the Audio button 8 upwards/downwards Press the Audio button 8 Press and hold the Link button 7 and the Audio button 8 for 5 seconds Functions Establishes/disconnects the link between headset and base station Accepts/ends a call Switches the headset on/off Page 23 23/25 32 Adjusts the ring tone volume and the volume of the acoustic signals or the audio volume Mutes the microphone/unmutes the microphone Changes the direction of the volume up/down function of the Audio button 9 Special pairing mode (GAP) 21 22 21 33 Product overview 8 7 7 | D 10 series Product overview Overview of the LEDs Overview of the LEDs of the base station Link LED lights up blue lights up red flashes red is off Meaning Active link to the headset No link to the headset Headset is muted Standby mode, headset is within the range of the base station, but no audio link Incoming call LED flashes Meaning Incoming call Charge status LED (white = lit) Meaning LED segment 1 flashes LED segments 1 4 are lit Rechargeable battery is almost flat Rechargeable battery is charged Overview of the LEDs of the headset Headset LED lights up blue flashes blue slowly flashes red 3 times is off flashes blue/red Meaning Headset is being charged in the base station Active link to the base station Rechargeable battery is almost flat Standby mode or headset is switched off/

headsets rechargeable battery is fully charged Special pairing mode/direction of the volume up/down function of the Audio button is being changed Pairing of an additional headset with the base station/conference call D 10 series | 8 Setting up and connecting the base station Setting up and connecting the base station D 10 USB D 10 Phone Setting up the base station Insert the headset holder into the recess of the base station. Place the base station at a minimum distance of 15 cm from the fixed line phone. Connecting the base station to the mains power supply 1 Connect the plug of the power supply unit to the DC IN socket (marked yellow). Connect the power supply unit to a wall socket. 2 The Link LED lights up red. 1 2 Disconnecting the base station from the mains power supply If the product is not used for extended periods of time, unplug the power supply unit from the wall socket. 9 | D 10 series Setting up and connecting the base station Connecting the base station to a fixed line phone Check which connection possibility is best suited for your telephone. Follow the instructions in the corresponding chapter. Connection possibilities I II III Connection to a fixed line phone without headset socket Connection to a fixed line phone with headset socket Connection to an optional mechanical handset lifter Page 10 11 11 I Connecting the base station to a fixed line phone without headset socket 1 Disconnect the handset cable from the telephone and connect it to the Handset socket (marked gray) on the base station. 2 Connect the telephone cable to the handset socket on the telephone and to the Phone socket (marked green) on the base station. 3 Use a pointed object (e.g. a ball pen) to set the DIP switches 1 and 2 to the position shown. 1 2 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode 3 D 10 series | 10 Setting up and connecting the base station II Connecting the base station to a fixed line phone with headset socket 1 Connect the telephone cable to the headset socket on the telephone and to the Phone socket (marked green) on the base station. 2 Use a pointed object (e.g. a ball pen) to set the DIP switches 1 and 2 to the position shown. 1 2 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode III Connecting the base station to an optional mechanical handset lifter The Sennheiser HSL 10 mechanical handset lifter is an optional accessory available from your Sennheiser partner. The handset lifter allows you to answer calls even when you are away from your desk. Connect the base station to the fixed line phone as described in chapter I or II

. Connect the handset lifter to the ACC socket on the base station. Connect the handset lifter to the fixed line phone. For more informa-

tion, refer to the instruction manual of the HSL 10 handset lifter. 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode 11 | D 10 series Setting up and connecting the base station Connecting the base station to an optional electronic hook switch control (EHS) The necessary EHS connection cables as well as adapter cables for manu-

facturer specific standards are available as optional accessories from your Sennheiser partner. The corresponding quick guides are supplied with the cables or can be found on the product page on our website at www.sennheiser.com/cco. By way of example of a Siemens and an Alcatel adapter cable, the following describes how to connect the base station to an electronic hook switch. 1 Connect the base station to the fixed line phone. 2 Use a pointed object (e.g. a ball pen) to set the DIP switch to the posi-

2 2 tion shown. Siemens, Agfeo, Aastra, Auerswald, etc. 1 Alcatel 1 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode For an overview of the available connection and adapter cables, visit the D 10 at www.sennheiser.com/cco or contact your Sennheiser partner. our website product series page on D 10 series | 12 Setting up and connecting the base station Connecting the base station to a computer Connect the USB cable to the PC socket (marked orange) on the base station and to a USB socket of your computer. The operating system detects the USB audio device Sennheiser D 10 and installs the neces-

sary drivers. 3 6 9 0 Ring Volume 1 2 3456 Settings Sennheiser PC software The free Sennheiser PC software allows you to add value to your Sennheiser products. The Sennheiser Updater, for example, facilitates easy updating of products with new software. For more information, visit our website at www.sennheiser.com/cco/software. Charging the headset before first use Charge the rechargeable battery for at least 20 minutes without interruption before using it for the first time. A complete charging process takes about 60 minutes (see page 30). During the first charging process, it may take up to 5 minutes until the Headset LED lights up blue. 13 | D 10 series Individually adjusting the headset Individually adjusting the headset Using the headset with the ear hook 1 Insert the ear hook into the ear hook slot. 2 Pre-shape the ear hook by bending it slightly. 3 Place the ear hook around your ear. 4 Bend the flexible ear hook so that the headset sits comfortably and securely on your ear. 2 3 Left Right 1 4 D 10 series | 14 Individually adjusting the headset Using the headset with the headband 1 Remove the ear hook by carefully pulling it upwards. 2 Attach the headset to the headset holder of the headband. 3 Rotate the microphone boom and adjust the headset so that the ear pad rests comfortably on your right or left ear. 1 2 3 Left Right 15 | D 10 series Configuring the headset system Configuring the headset system Adjusting the headset system using the DIP switches Use a pointed object (e.g. a ball pen) to set the DIP switches to the desired position. 2 Configuring the handset lifter/hook switch DIP switches 1 and 2 Switch position Function Manual operation Lifts/hangs up the handset manually or using the handset lifter (Sennheiser HSL 10). Electronic hook switch (DHSG standard) Call control via the headset system. For faster link establishment, see Fast Link. Electronic hook switch (MSH standard) Call control via the headset system. Fast Link for DHSG standard and HSL 10 handset lifter Recommended for frequent callers. Shorter battery life. Fast link establishment without delay due to hidden link to the base station. Adjusting the ring tones of the base station DIP switches 1 and 2 Switch position Function Ring tone is off. Ring tone 1 is activated. Ring tone 2 is activated. Ring tone 3 is activated. D 10 series | 16 Configuring the headset system Adjusting the radio range DIP switch 3 If many DECT systems are operated in a confined space, interference can occur. In this case, you should change the radio range. Switch position Function Standard radio range Reduced radio range Use this setting in order to avoid interference with other DECT systems Range of approx. 10 m indoors Automatically establishing the wireless link between headset and base station (Auto Link) DIP switch 4 A u t o L i n k Switch position Function Manual link establishment When taking the headset out of the base station, you have to manually establish the wireless link between headset and base station. Automatic link establishment Auto Link When taking the headset out of the base station, a wireless link is automatically established between headset and base station. Switching between wideband and narrowband audio transmission DIP switch 5 Switch position Function Wideband audio transmission Automatic frequency adjustment of wideband and narrowband calls. Wideband audio transmission is e.g. supported by Skype and gives high speech quality. Battery life: 8 hours Narrowband audio transmission Battery life: 12 hours Limiting the volume DIP switch 6 Switch position Function Standard limitation Limited volume (country specific) AU version:

in compliance with Directive AS/ACIF G616:2006 EU and US version:

in compliance with Directive 2003/10/EC 17 | D 10 series Configuring the headset system Adjusting the audio signal by means of the dial tone 1 Put on the headset. 2 Press the Link button on the headset. The Link LED on the base station lights up blue. 3 Lift the handset. You hear a dial tone. 4 Set the ABC switch to the position A, B or C so that you can hear a clear dial tone in the headset. 1 3 2 4 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode D 10 series | 18 Adjusting the volume of the transmission Adjusting the microphone volume of the call transmission By default, the microphone volume control is set to position 4. This setting is suitable for most telephones. Make a call to someone who will help you find the correct sensitivity setting for your microphone. Turn the microphone volume control so that the other party can hear you at a comfortable level. 3 6 9 0 Mic. Volume 2 3456 1 A B C Settings Mode Adjusting the microphone volume of the USB transmission Some softphones adjust the microphone sensitivity automatically. Activate this function in order to be able to optimally use the microphone and, via your operating system, adjust the microphone sensitivity so that the other party can hear you at a comfortable level

(see the Help function of your operating system). Adjusting the volume of the ring tone Adjusting the headsets ring tone volume and the volume of the acoustic signals Make sure that the headset is in standby mode (the Link LED on the base station is off). If necessary, press the Link button on the headset. To adjust the volume, move the Audio button as shown in the diagram. When the minimum or maximum volume is reached, you hear a double beep in the headset. Adjusting the ring tone volume of the base station Turn the volume control to reduce or increase the ring tone volume. Ring Volume 3 6 9 0 Ring Volume 1 2 3456 Settings Configuring the headset system

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19 | D 10 series Configuring the headset system Adjusting the automatic audio transmission Auto Audio With the Auto Audio function activated and in the case of a USB connection, the audio signals e.g. from Windows Media Player or iTunes are automatically transmitted to the headset. When you receive a call or when a connection to Skype or HeadSetup is established, the audio transmission stops and you hear for example the ring tone. The Auto Audio function is activated by default. Deactivating the Auto Audio function Use a pointed object to press the Set button for approx. 5 seconds. The Link LED rapidly flashes red several times. Activating the Auto Audio function Use a pointed object to press the Set button for approx. 5 seconds. The Link LED rapidly flashes blue several times. 1 2 3456 5s D 10 series | 20 Making calls using the headset Making calls using the headset Adjusting the volume WARNING Hearing damage due to high volumes!

Listening at high volume levels for long periods can lead to permanent hearing defects. Set the volume to a low level before putting on the headset. Do not continuously expose yourself to high volumes. Adjusting the volume of the audio signal You can adjust the volume of the audio signal by means of the dial tone or during a call. Make sure that a link is established between headset and base station

(the Link LED on the base station lights up blue). If necessary, press the Link button on the headset. To adjust the volume, move the Audio button as shown in the diagram. When the minimum or maximum volume is reached, you hear a double beep in the headset. Swapping the direction of the volume buttons On the Audio button, check which direction is assigned volume down. Simultaneously press and hold the Link button and the Audio button for 5 seconds. The Headset LED alternately flashes blue/red. Push the Audio button in the direction volume down until the Headset LED goes off. The direction of the volume up/down function of the Audio button is changed. The headset switches to standby mode. 5 s 5 s 21 | D 10 series Making calls using the headset Muting the headsets microphone Press the Audio button. The microphone is muted. While the microphone is muted, the Link LED on the base station flashes red. Unmuting the headsets microphone Press the Audio button. You hear a beep in the headset. The muting is canceled and the Link LED on the base station lights up blue. If you leave the DECT range In normal office buildings, the range between headset and base station is up to 55 m. If, during a call, the audio quality deteriorates or the link breaks down completely, you hear a descending sequence of beeps in the headset. The Link LED on the base station lights up red. Re-enter the DECT range of the base station within 60 seconds. You hear a ring tone in the headset. Press the Link button on the headset to resume the call. If your softphone supports call control, the call will automatically be ended 60 seconds after leaving the DECT range. 55 m D 10 series | 22 Calling via the fixed line phone using the headset Establishing/disconnecting a wireless link If you want to use the headset to accept, make or end calls, you have to establish a wireless link between headset and base station. You can choose between manual and automatic link establishment (see Auto Link on page 17). Press the Link button on the headset. The link is established. The Link LED on the base station lights up blue and the Headset LED flashes blue slowly. OR The link is disconnected. The Link LED on the base station and the Headset LED go off. The headset is in standby mode. connected disconnected connected disconnected If your telephone has a built-in electronic hook switch supporting the MSH standard, you can only disconnect the wireless link between headset and base station by placing the headset into the base station. Managing calls without using a call control functionality Accepting a call: You hear the ring tone of the fixed line phone. Press the Link button on the headset. Lift the handset or press the accept call button on your fixed line phone. Making a call: Press the Link button on the headset to establish a link between base station and headset. Lift the handset and dial the desired number. The phone connection is established. Ending a call: Hang up the handset or press the end call button on your fixed line phone. Making calls using the headset 23 | D 10 series Making calls using the headset Managing calls using a call control functionality (EHS, HSL 10) Accepting a call: You hear a ring tone in the headset. Press the Link button on the headset to accept the call. The handset lifter/electronic hook switch lifts the handset. Making a call: Dial the desired number. Press the Link button on the headset to establish a link between base station and headset. The phone connection is established automatically. Ending a call: Press the Link button. If the other party hangs up, your telephone and your headset become automatically ready to receive the next call. Frequent callers who use an electronic hook switch with DHSG capability are recommended to activate the Fast Link function for faster link establishment (see page 15) Switch position Function Fast Link (only when DHSG standard is used) Recommended for frequent callers. Shorter battery life. Fast link establishment without delay due to hidden link to the base station. Switching a call between headset and fixed line phone Press the Link button on the headset to switch between headset and handset of the fixed line phone during an ongoing call. In case of a fixed line phone with a handset lifter/an electronic hook switch, this switching can only be done on the fixed line phone. D 10 series | 24 Calling via the computer using the headset Establishing/disconnecting a wireless link If you want to use the headset to accept, make or end calls, you have to establish a wireless link between headset and base station. You can choose between manual and automatic link establishment (see Auto Link on page 17). Press the Link button on the headset. The link is established. The Link LED on the base station lights up blue and the Headset LED flashes blue slowly. OR The link is disconnected. The Link LED on the base station and the Headset LED go off. The headset is in standby mode. connected disconnected connected disconnected Managing calls via the softphone Accepting a call: The softphone signals that you are receiving a call. You hear a ring tone in the headset. Click on Accept call on your softphone. Making a call: Press the Link button on the headset to establish a link between base station and headset. If the Auto Audio function is activated, this step is not necessary (see page 20). Start the call using your softphone. Ending a call: End the call using your softphone. Making calls using the headset 25 | D 10 series Making calls using the headset another softphone, please Managing calls via the headset The Microsoft Lync softphone supports this function automatically. If you use at www.sennheiser.com and check whether and which free Sennheiser software you additionally require. If necessary, install the software in order to manage calls directly via the headset. Accepting a call: The softphone signals that you are receiving a call. You hear a ring tone in the headset. Press the Link button on the headset to accept the call. visit our website Making a call: Start the call using your softphone, the audio signal is automatically transmitted to the headset. Ending a call: Press the Link button. If the other party hangs up, your softphone and your headset become automatically ready to receive the next call. D 10 series | 26 Making calls using the headset Making a conference call GUEST 1 The headset system allows you to make a conference call with up to 4 D 10 series headsets. The first headset paired (master) is used control the call establishment and end of conversation. MASTER GUEST 2 GUEST 3 Pairing the master headset with the base station The Link LED on the base station is off (headset is disconnected) or lights up red (no headset paired). Place the master headset into the base station. The Headset LED alternately flashes blue/red until a link to the base station is established. The Headset LED flashes blue 3 times. Take the headset out of the base station and press the Link button to pair the headset with the base station. The Link LED on the base station lights up blue. New MASTER or 3x 27 | D 10 series Making calls using the headset Adding a guest headset to a conference call The Link LED on the base station lights up blue. Press and hold the Audio button while placing the guest headset into the base station of the master headset. The Headset LED alternately flashes blue/red until a link to the base station is established. The Headset LED flashes blue 3 times. Take the guest headset out of the base station. You hear a beep in the master headset. To add the guest headset to the conference call, press the Link button on the master headset within 15 seconds. Repeat this procedure to add additional guest headsets to the conference call. .. & insert the headset into the charging cradle. GUEST 1-3 Press & hold the mute button... Accept the Guest headset. MASTER 3x Call the other party. The Link LED on the base station flashes blue. D 10 series | 28 Making calls using the headset Easy paring Dropping a guest headset from the conference call Press the Link button on the guest headset. The guest headset is dropped from the conference call. easy pairing To subsequently use the guest headset with other base stations, place the guest headsets into the other base stations. The Headset LED alternately flashes blue/red until a link is established. Ending a conference call Place the master headset into the magnetic holder of the base station to end the conference call and to drop the guest headsets from the conference call. 3x on 29 | D 10 series Charging the headset and storing the headset system Charging the headset and storing the headset system Charging the headset Always store the headset in the base station to ensure that it is fully charged when needed. The intelligent battery charging technology prevents over-charging. Place the headset into the magnetic holder of the base station. The Headset LED lights up blue and the rechargeable battery is being charged. The Charge status LED on the base station indicates the charge status:

LED segment

(white = lit up) Required charging time Corresponds to a talk time of Wideband Narrowband approx. 10 min. approx. 20 min. approx. 40 min. approx. 60 min. approx. 2 hrs approx. 3 hrs approx. 4 hrs approx. 6 hrs approx. 6 hrs approx. 9 hrs approx. 8 hrs approx. 12 hrs Shortly before the rechargeable battery is about to run flat, only one LED segment lights up weakly. The Headset LED flashes red and you hear three beeps. You have several minutes of battery reserve. When the rechargeable battery is flat, the headset switches off. f the headset is outside the range of the base station, it will switch off after 30 minutes in order to conserve battery power. D 10 series | 30 Charging the headset and storing the headset system Charging the headset using the optional CH 10 headset charger The CH 10 headset charger is an optional accessory available from your Sennheiser partner. The CH 10 allows you to charge additional D 10 series headsets, e.g. for sharing the same base station when working shifts. Refer to the instruction manual of the CH 10 for more information. Charging several headsets simultaneously The MCH 7 multi USB power source is an optional accessory available from your Sennheiser partner. Together with the CH 10 USB, the MCH 7 allows you to charge up to 7 headsets simultaneously. MCH 7 CH 10 USB Refer to the instruction manual of the MCH 7 for more information. 31 | D 10 series Charging the headset and storing the headset system Switching the headset system off during extended non-use You can switch off the headset system (1) or the headset (2) when not using the products for extended periods of time (e.g. when you are on holiday). Switching the headset system off 1 Disconnect the base station from the mains power supply. The base station switches off immediately, the headset switches off about 30 minutes later. 2 Press and hold the Link button for 5 seconds to switch off the headset immediately. The Headset LED flashes red 3 times, the headset is switched off completely. The Link LED on the base station lights up red after a short time, the Charge status LED on the base station goes off. 1 2 5 s 3 0 6 9 1 2 3456 3x Switching the headset system on and pairing the components Plug the power supply unit into a wall socket. The base station is switched on. Place the headset into the magnetic holder of the base station. The Headset LED flashes blue 3 times and then lights up blue. The base station and the headset are paired. D 10 series | 32 Sharing a workplace The headsets and base stations of the D 10 series are compatible with each other. If, for example, you share a workplace, you can use one base station with different headsets. The last headset paired with the base station can be used without more ado. Place the headset to be used into the magnetic holder of the base station. The Headset LED alternately flashes blue/red until the headset is successfully paired with the base station. The Headset LED flashes 3 times blue and then goes off. You can now use the newly paired headset. If pairing has failed, the Link LED on the base station lights up red or is off. Repeat the procedure. 3x 5 s Using the headset with a third party base station

(DECT-GAP telephone) Place the headset at a maximum distance of 1 m from the third party base station. Simultaneously press and hold the headsets Link button and Audio button for 5 seconds. The headset switches to a special pairing mode and the Headset LED alternately flashes blue/red. Set the third party base station to a special pairing mode (see the instruction manual of the third party base station). The default code for the headset is 0000. The headset pairs with the third party base station. If pairing is successful, the Headset LED goes off. If pairing is not successful within 60 seconds, the headset switches back to standby mode. To pair the headset again with a D 10 series base station:

Simultaneously press and hold the headsets Link button and Audio button for 5 seconds. The headset switches to a special pairing mode and the Headset LED alternately flashes blue/red. Place the headset into the magnetic holder of the base station. The Headset LED flashes blue 3 times and then lights up blue. The base station and the headset are paired. Sharing a workplace 33 | D 10 series Cleaning and maintaining the headset system Cleaning and maintaining the headset system CAUTION Liquids can damage the electronics of the product!

Liquids entering the housing of the product can short-circuit the electronics. Keep all liquids far away from the product. Do not use any solvents or cleansing agents. Before cleaning, disconnect the base station from the mains power supply. Only use a dry and soft cloth to clean the product. Clean the charging contacts of the base station and the charging contacts of the headset from time to time using e.g. a cotton swab. D 10 series | 34 Cleaning and maintaining the headset system Replacing the ear pads For reasons of hygiene, you should replace the ear pads from time to time. Spare ear pads are available from your Sennheiser partner. 1 Carefully remove the old ear pad from the ear cup. Make sure that the fastening ring of the old ear pad is also removed from the ear cup. 2 Pull the collar B of the ear pad over the notch A of the headband. 3 Turn the ear pad counter-clockwise over the notch until the collar completely surrounds the ear cup. 2 B A 1 3 35 | D 10 series Cleaning and maintaining the headset system Replacing the headsets rechargeable battery CAUTION Damage to the product due to improper handling The cables can be kinked or damaged if you open the battery compartment too jerkily. Carefully open the battery compartment and loosen the connector plug of the rechargeable battery. Spare rechargeable batteries are available from your Sennheiser partner. Only use spare rechargeable batteries recommended by Sennheiser. 1 Remove the ear hook or the headband (see page 14) and open the battery compartment. 1 2 Carefully move the battery compartment cover in the direction of the arrow until you overcome a slight resistance. Remove the rechargeable battery and carefully loosen the connector plug of it. 3 Insert the connector plug of the new rechargeable battery into the connection socket. Observe correct orientation of the connector plug. 4 Close the battery compartment. 3 2 4 D 10 series | 36 If a problem occurs If a problem occurs Problem The headset is placed into the base station but the Charge status LED is off Possible cause Base station is not connected to the mains power supply Rechargeable battery is deep discharged Link between headset and base station cannot be established Bad radio link between headset and base station Headset is not paired with the base station, the Link LED lights up red Base station is only connected via the USB cable Transmission range is exceeded Noise interference and connection loss Microphone rubs on the cheek or perhaps the beard Too many DECT systems within the radio range Distance between base station and fixed line phone is so small that interference occurs Charging contacts of the headset or the base station are dirty Rechargeable battery is defective Headset is not properly placed into the magnetic holder of the base station Overaged rechargeable battery Microphone sensitivity is not correctly adjusted The rechargeable battery cannot be charged The rechargeable battery is quickly depleted even after charging Bad audio quality, the other party sounds too low or too loud The sound from the fixed line phone is distorted and disturbed Possible solution Connect the base station to the mains power supply. Wait several minutes until the Charge status LED lights up. For quick-charging the headset:

Briefly press the Set button at the rear of the base station. Place the headset into the base station. Connect the base station to the mains power supply. Reduce the distance between headset and base station. Adjust the radio range. Bend the microphone boom so that the microphone is about 0.8 - 1.2 (2 - 3 cm) from the corner of your mouth. Reduce the radio range. Set the base station to narrowband transmission. Increase the distance between base station and fixed line phone. Clean the charging contacts on the headset and on the base station. Replace the defective rechargeable battery with a new one. Check if the headset is properly placed into the magnetic holder. Replace the overaged rechargeable battery with a new one. Adjust the microphone sensitivity. Page 9 30 5 23 9 17 14 17 17 34 36 30 36 19 19 Base station is not adjusted to the fixed line phone. Use the ABC switch to adjust the base station to your fixed line phone. For more information and an FAQ list, please visit our website at www.sennheiser.com. If a problem occurs that is not listed in the above table or if the problem cannot be solved with the proposed solutions, please contact your local Sennheiser partner for assistance. To find a Sennheiser partner in your country, search at www.sennheiser.com under Service & Support. 37 | D 10 series Specifications Specifications Base station D 10 BS USB/D 10 BS USB ML/D 10 BS Phone Dimensions Weight 88 x 119 x 100 mm (W x H x D) D 10 BS Phone D 10 BS USB approx. 352 g approx. 328 g Operating temperature range +5 C to +45 C (+41 F to +113 F) Storage temperature range 20 C to +70 C (4 F to +158 F) Headset D 10 HS Talk time Charging time Dimensions Weight 140 x 24 x 22 mm (W x H x D) with ear hook: approx. 22 g with headband: approx. 45 g narrowband: up to 12 hours wideband: up to 8 hours 50%: approx. 20 min 100%: approx. 1 hour free line of sight: up to 180 m in office buildings: up to 55 m dynamic, neodymium magnet Speaker type Microphone type electret microphone, noise canceling Operating temperature range +5 C to +45 C (+41F to +113 F) Storage temperature range 20 C to +70 C (4 F to +158 F) Range

(environment dependent) Power supply unit 100 240 V~

max. 0.2 A 50 60 Hz 5.9 V max. 850 mA Nominal input voltage Nominal input current Mains frequency Nominal output voltage Nominal output current Operating temperature range +5 C to +45 C (+41 F to +113 F) Storage temperature range 20 C to +70 C (4 F to +158 F) operation: 20 to 85%

Relative humidity storage: 20 to 95%

approx. 75 g Weight D 10 series | 38 Specifications DECT Frequency SAR value of D 10 HS In compliance with Europe:

US version:

DECT 6.0 EU, UK, AU:

CAT IQ 1.0 1,880 to 1,900 MHz 1,920 to 1,930 MHz 0.196 W/kg

(max. 10 g SAR) 0.093 W/kg

(max. 1 g SAR) EMC Radio Safety SAR EN 301489-6 EN 301406 EN 60950-1 EN 50360 ref EN 62209-1 (headset) USA & Canada:

This product meets the safety requirements of CSA No. 231437 Canada:

USA:

IC: 2099A-D10BSPHONE

(D10 BS Phone-US, D10 BS USB-US, D10 BS USB ML-US) IC: 2099A-D10HS (D 10 HS) FCC ID: DMOCBDDGG (D10 BS Phone-US, D10 BS USB-US, D10 BS USB ML-US) FCC ID: DMOCDHDGG (D 10 HS) 39 | D 10 series Manufacturer Declarations Manufacturer Declarations Warranty Sennheiser Communications A/S gives a warranty of 24 months on this product. For the current warranty conditions, please visit our website at www.sennheiser.com or contact your Sennheiser partner. In compliance with the following requirements WEEE Directive (2012/19/EU) Please dispose of this product by taking it to your local collection point or recycling center for such equipment. This will help to protect the environment in which we all live. Battery Directive (2013/56/EU) The products built-in rechargeable batteries can be recycled. In order to protect the environment, please dispose of defective products with their rechargeable batteries as special waste or return them to your specialist dealer. CE Conformity 1321 R&TTE Directive (1999/5/EC) EMC Directive (2014/30/EU) Low Voltage Directive (2006/95/EC) ErP Directive (2009/125/EC) RoHS Directive (2011/65/EU) The declaration is available at www.sennheiser.com. Before putting the product into operation, please observe the respective country-specific regulations!

D 10 series | 40 Manufacturer Declarations Statement regarding FCC FCC Declaration of Conformity (DoC) SENNHEISER Model No:

D 10 BS Phone-US, D 10 BS USB-US, D 10 BS USB ML-US We, Sennheiser Electronic Corporation One Enterprise Drive Old Lyme CT 06371 USA Tel: +1 (860) 434 9190, ext. 144 Fax: +1 (860) 434 1759 declare the above device comply with the requirements of Federal Communications Commission. This device complies with Part 15 of the FCC rules. Operation is subjected 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. Responsible Party: Greg Beebe This equipment has been tested and found to comply with the limits for a Class B digital device of the FCC Rules, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment 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 equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Changes or modifications made to this equipment not expressly approved by Sennheiser electronic Corp. may void the FCC authorization to operate this equipment. The headset D10HS complies with FCC RF radiation exposure limits for devices used by the general public. It has been tested for SAR and has complied with Industry Canada SAR limits for devices used by the general public. Statement regarding Industry Canada This device complies with RSS-213 Issue 2 of the Industry Canada 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. The headset D10HS complies with Industry Canada RF radiation exposure limits for devices used by the general public. It has been tested for SAR and has complied with Industry Canada SAR limits for devices used by the general public. Trademarks Sennheiser is a registered trademark of Sennheiser electronic GmbH & Co. KG. Other product and company names mentioned in this instruction manual may be the trademarks or registered trademarks of their respective owners. 41 | D 10 series Sennheiser Communications A/S Industriparken 27, DK-2750 Ballerup, Denmark www.sennheiser.com Printed in China, Publ. 10/14, A01