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Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 7.0
OL-15299-01
Chapter 3 Setting Up the Cisco Unified IP Phone
Understanding the Cisco Unified IP Phone 7970 Series Components
Note In some cases, hum may be reduced or eliminated by using a local power cube or power injector.
These environmental and hardware inconsistencies in the locations where Cisco Unified IP Phones are
deployed means that there is not a single headset solution that is optimal for all environments.
Cisco recommends that customers test headsets in their intended environment to determine performance
before making a purchasing decision and deploying en mass.
Note The Cisco Unified IP Phone 7970G/7971G-GE supports wideband headsets.
Audio Quality Subjective to the User
Beyond the physical, mechanical and technical performance, the audio portion of a headset must sound
good to the user and the party on the far end. Sound quality is subjective and Cisco cannot guarantee the
performance of any headsets or handsets. However, a variety headsets from leading headset
manufacturers have been reported to perform well with Cisco Unified IP Phones. See manufacturer’s
sites for details.
Connecting a Headset
To connect a 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 by using the headset.
You can use the 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 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:
• 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.