Using External Devices; Installing The Cisco Unified Ip Phone - Cisco 8961 Administration Manual

Chapter 3 Setting Up the Cisco Unified IP Phone

Using External Devices

Cisco recommends the use of good quality external devices (such as 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 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 performs 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].

Installing the Cisco Unified IP Phone

You must connect the Cisco Unified IP Phone to the network and to a power source before using it. See
Figure
Unified IP Phones 8961, 9951, and 9971, respectively. See
graphical representations of the side connections for Cisco Unified IP Phones 8961, 9951, and 9971,
respectively.
Before you install a phone, even if it is new, upgrade the phone to the current firmware image. 
Note

Before using external devices, read the
performance information.
Firmware upgrades over the WLAN interface may take longer than upgrading over the wired interface,
Note
depending on the quality and bandwidth of the wireless connection. Some upgrades may take more than
hour.
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
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.
3-2, Figure 3-4 and Figure 3-6 for graphical representations of the back connections for Cisco
Figure
"Using External Devices" section on page 3-11
Installing the Cisco Unified IP Phone
3-3, Figure 3-5, and Figure 3-7
for safety and
for
3-11