Chapter 3 Setting Up the Cisco IP Phone
Before You Begin
3-4
Cisco IP Phone Administration Guide for Cisco CallManager, Cisco IP Phone 7961G/7961G-GE and 7941G/7941G-GE
OL-6966-01
Speakerphone
By default, the speakerphone is enabled on the Cisco IP Phone.
You can disable the speakerphone through the Cisco CallManager Administration
application. To do so, choose Device > Phone and locate the phone you want to
modify. In the Phone Configuration web page for the phone, check the Disable
Speakerphone check box.
Headset
Although Cisco Systems performs some internal testing of third-party headsets
for use with the Cisco IP Phones, Cisco does not certify or support products from
headset or handset vendors. Because of the inherent environmental and hardware
inconsistencies in the locations where Cisco IP Phones are deployed, there is not
a single “best” solution that is optimal for all environments. Cisco recommends
that customers test the headsets that work best in their environment before
deploying a large number of units in their network.
In some instances, the mechanics or electronics of various headsets can cause
remote parties to hear an echo of their own voice when they speak to Cisco IP
Phone users.
Cisco Systems recommends the use of good quality external devices, like headsets
that are 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 cell phones and two-way radios, some audio noise may still
occur. See the “Using External Devices with Your Cisco IP Phone” section on
page 3-8 for more information.
The primary reason that support of a headset would be inappropriate for an
installation is the potential for an audible hum. This hum can either be heard by
the remote party or by both the remote party and the Cisco IP Phone user. Some
potential humming or buzzing sounds can be caused by a range of outside sources,
for example, electric lights, being near electric motors, large PC monitors. In
some cases, a hum experienced by a user may be reduced or eliminated by using
a local power cube. See the “Safety and Performance” section on page 3-6 for
more information.