Chapter 3 Setting Up The Cisco Unified Ip Phone; Handset; Speakerphone; Headset - Cisco 6921 - Unified IP Phone Standard VoIP Administration Manual

Chapter 3 Setting Up the Cisco Unified IP Phone
Each port supports 10/100 Mbps half- or full-duplex connections to external devices. You can use either
Category 3/5/5e cabling for 10-Mbps connections, but you must use Category 5/5e for 100 Mbps
connections.
Use the SW network port to connect the phone to the network. You must use a straight-through cable on
this port. The phone can also obtain inline power from a switch over this connection. See the
Phones to the Cisco Unified Communications Manager Database" section on page 2-7
Use the PC access port to connect a network device, such as a computer, to the phone. You must use a
straight-through cable on this port.

Handset

The handset is designed especially for use with a Cisco Unified IP Phone. It includes a light strip that
indicates incoming calls and voice messages waiting.
To connect a handset to the Cisco Unified IP Phone, plug the cable into the handset and the Handset port
on the back of the phone.

Speakerphone

By default, the speakerphone is enabled on the Cisco Unified IP Phone.
You can disable the speakerphone by using Cisco Unified Communications Manager Administration. To
do so, choose Device > Phone and locate the phone you want to modify. In the Phone Configuration
window for the phone, check the Disable Speakerphone check box.

Headset

Although Cisco Systems performs internal testing of third-party headsets for use with the Cisco Unified
IP Phones, Cisco Systems does not certify or support products from headset or handset vendors.
Cisco recommends the use of good quality external devices, for example, headsets that are screened
against unwanted radio frequency (RF) and audio frequency (AF) signals. Depending on the quality of
headsets and their proximity to other devices such as cell phones and two-way radios, some audio noise
or echo may still occur. An audible hum or buzz may be heard by either the remote party or by both the
remote party and the Cisco Unified IP Phone user. Humming or buzzing sounds can be caused by a range
of outside sources; for example, electric lights, electric motors, or large PC monitors. See the
External Devices" section on page 3-4
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 masse.
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
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Understanding the Cisco Unified IP Phone 6921, 6941, and 6961 Components
for more information.
"Adding
for details.
"Using
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