A Cisco Unified IP Phone, like other network devices, must be configured and managed. These phones encode
G.711 a-law, G.711 mu-law, G.722, G.729a, G.729ab, iLBC, and iSAC codecs, and decode G.711 a-law,
G.711 mu-law, G.722, G.729, G.729a, G.729b, G.729ab, iLBC, and iSAC codecs.
Using a cell, mobile, or GSM phone, or two-way radio in close proximity to a Cisco Unified IP Phone
might cause interference. For more information, see the manufacturer’s documentation of the interfering
device.
Caution
Cisco Unified IP Phones provide traditional telephony functionality, such as call forwarding and transferring,
redialing, speed dialing, conference calling, and voice messaging system access. Cisco Unified IP Phones
also provide a variety of other features.
As with other network devices, you must configure Cisco Unified IP Phones to prepare them to access Cisco
Unified Communications Manager and the rest of the IP network. By using DHCP, you have fewer settings
to configure on a phone. If your network requires it, however, you can manually configure information such
as: an IP address, TFTP server, and subnet information.
Cisco Unified IP Phones can interact with other services and devices on your IP network to provide enhanced
functionality. For example, you can integrate Cisco Unified Communications Manager with the corporate
Lightweight Directory Access Protocol 3 (LDAP3) standard directory to enable users to search for coworker
contact information directly from their IP phones. You can also use XML to enable users to access information
such as weather, stocks, quote of the day, and other web-based information.
Finally, because the Cisco Unified IP Phone is a network device, you can obtain detailed status information
from it directly. This information can assist you with troubleshooting any problems users might encounter
when using their IP phones. You can also obtain statistics about a current call or firmware versions on the
phone.
To function in the IP telephony network, the Cisco Unified IP Phone must connect to a network device, such
as a Cisco Catalyst switch. You must also register the Cisco Unified IP Phone with a Cisco Unified
Communications Manager system before sending and receiving calls.
Cisco Unified IP Phone 8961
The following sections describe attributes of the Cisco Unified IP Phone 8961.
Phone Connections for Cisco Unified IP Phone 8961
Connect your phone to the corporate IP telephony network, using the following diagram.
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager
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Cisco Unified IP Phone 8961
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