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Understanding the Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Components

Audio Quality

Beyond its physical, mechanical and technical performance, the audio portion of a headset must sound

good to the user and to the party on the far end. Sound quality is subjective and Cisco cannot guarantee

the performance of any headsets. However, a variety of headsets from leading headset manufacturers

have been reported to perform well with Cisco Unified IP Phones. See manufacturer's sites for details.

For information about wireless headsets that work in conjunction with the wireless headset remote

hookswitch control feature, see:

http://www.cisco.com/en/US/partner/prod/voicesw/ucphone_headsets.html.

Connecting a Headset

To connect a wired headset to the Cisco Unified IP Phone, plug it into the Headset port on the back of

the phone. Press the Headset button on the phone to place and answer calls using the headset.

You can use the wired headset with all of the features on the Cisco Unified IP Phone, including the

Volume and Mute buttons. Use these buttons to adjust the ear piece volume and to mute the speech path

from the headset microphone.

Disabling a Headset

You can disable the headset by using Cisco Unified Communications Manager Administration. If you

do so, you also will disable the speakerphone.

To disable the headset from Cisco Unified Communications Manager Administration, choose Device >

Phone and locate the phone that you want to modify. In the Phone Configuration window for the phone,

check the Disable Speakerphone and Headset check box.

Using External Devices

The following information applies when you use external devices with the Cisco Unified IP Phone:

Cisco recommends the use of good quality external devices that are shielded (screened) against

unwanted radio frequency (RF) and audio frequency (AF) signals.

Depending on the quality of these devices and their proximity to other devices such as mobile phones or

two-way radios, some audio noise may still occur. In these cases, Cisco recommends that you take one

or more of the following actions:

•

Cisco cannot guarantee the performance of the system because Cisco has no control over the quality of

external devices, cables, and connectors. The system will perform adequately when suitable devices are

attached using good quality cables and connectors.

In European Union countries, use only external headsets that are fully compliant with the EMC Directive

Caution

[89/336/EC].

Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)

3-4

Move the external device away from the source of the RF or AF signals.

Route the external device cables away from the source of the RF or AF signals.

Use shielded cables for the external device, or use cables with a better shield and connector.

Shorten the length of the external device cable.

Apply ferrites or other such devices on the cables for the external device.

Chapter

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