Using a ComputerBy connecting the unit to a computer, you can use theunit’s microphones and speaker for calls made orreceived with the computer using your preferred IPphone software. You can connect using the includedUSB Cable or PC Cable.Connecting Using the USBCableChanging the Operation Mode1. Press [MENU].2. Select "Operation Mode", then pressSELECT .3. Select "USB Audio".4. PressSAVE .5. Press [MENU].Notice• If this setting is changed, the unit must berestarted before the new settings becomeseffective (see page 47).• When the operation mode is set to "USBAudio", IP, TEL, PS or PC calls cannot bemade or received. Also, Conferencing PhoneManager cannot be operated.Connecting to a Computer1. Connect the included USB Cable to the USB port(A) of the unit, and to the USB port of the computer.USBA• The new hardware wizard is displayed on thecomputer. If the new hardware wizard is notdisplayed automatically, set the operation modeto "IP-PBX" or "Peer to Peer" (seepage 28).2. Select [Install the software automatically(Recommended)] and then click [Next].• A dialogue may be displayed that indicates thesoftware has not passed Windows logo testing.This is normal. The software will not cause anydifficulties with your operating system. Click[Continue Anyway] to proceed withinstallation.3. Click [Finish].Using a Computer1. Confirm that "USB-AUDIO" is shown in theupper-right corner of the display."USB Audio" mode is selected.• If "USB-AUDIO" is not shown on the display,change the operation mode to "USBAudio" (explained on this page).2. Press [ ] to begin using the unit’s microphonesand speaker.• Press [ ] again to turn off the microphonesand speaker.3. Use the desired computer software to make oranswer a call.4. Use the software to end the call.5. Turn off the unit’s microphones and speaker bypressing [ ].Note• Change the settings of the following parametersof the IP phone software while on a call.– AGC (Automatic Gain Control): OFF– Echo cancelling: OFF– Volume: Middle• When changing the speaker volume while on acall, change the unit's volume setting. Keep thevolume of the IP phone software on the middlelevel.• If feedback or echoing occurs while on a call,decrease the speaker volume of the computeror the IP phone software.• Leave at least 50 cm of space between the unitand the computer.Document Version 2010/02 Operating Instructions 45Using a Portable Station (PS) or Computer