Audio Quality Subjective To The User; Using External Devices With Cisco Unified Ip Phones; Powering On The Cisco Unified Wireless Ip Phone 7925G - Cisco 7925G - Unified Wireless IP Phone VoIP Administration Manual

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7925G

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 to the party on the far end. Sound is subjective and Cisco cannot guarantee the
performance of any headsets, but some of the headsets on the sites listed below have been reported to
perform well on Cisco Unified IP Phones.
Nevertheless, it is ultimately the customer's responsibility to test this equipment in their own
environment to determine suitable performance.
For information about wired and Bluetooth wireless headsets for your phone, see the Cisco Unified
Wireless IP Phone 7925G Accessory Guide and these web sites:
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Using External Devices with Cisco Unified IP Phones

The following information applies when you use external devices with the Cisco Unified IP Phone:
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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 speakers, microphones, and headsets that are fully
Caution
compliant with the EMC Directive [89/336/EC].

Powering On the Cisco Unified Wireless IP Phone 7925G

After charging the battery and configuring the wireless IP phone, you are ready to power on the phone
and connect to the WLAN. Use the following sections for more information about starting up the phone.
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Cisco Unified Wireless IP Phone 7925G Administration Guide for Cisco Unified Communications Manager 7.0(1)
OL-15984-01
http://www.plantronics.com
http://www.jabra.com
http://www.jawbone.com
Cisco recommends the use of good quality external devices (speakers, microphones, and headsets)
that are shielded (screened) against unwanted radio frequency (RF) and audio frequency (AF)
signals.
Depending on the quality of these devices and the 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.
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Route the external device cables away from the source of the RF or AF signals.
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Use shielded cables for the external device, or use cables with a better shield and connector.
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Shorten the length of the external device cable.
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– Apply ferrites or other such devices on the cables for the external device.
Active and Standby Phone Modes, page 3-16
Understanding the Phone Startup Process, page 3-17
Powering On the Cisco Unified Wireless IP Phone 7925G
3-15