Cisco 3951 Administration Manual page 25

An Overview of the
Cisco Unified IP Phone
The Cisco Unified SIP Phone 3951 provides voice communication over an
Internet Protocol (IP) network. It functions like a digital business telephone,
allowing you to place and receive phone calls and to access features such as mute,
hold, transfer, and speed dial. The phone also supports security features that
include image and digest authentication.
The Cisco Unified SIP Phone 3951 is interoperable with RFC-3261, RFC-3264,
RFC-3311, and RFC 3515.
An IP Phone, like other network devices, must be configured and managed. These
phones support G.711a, G.711u, G.729(decode only), and G.729a. This manual
describes the Cisco Unified SIP Phone 3951.
This chapter includes the following topics:
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Using a cell, mobile, or GSM phone, or two-way radio in close proximity to a
Caution
Cisco Unified IP Phone might cause interference. For more information, refer to
the manufacturer's documentation of the interfering device.
Cisco Unified SIP Phone 3951 Administration Guide for Cisco Unified CallManager 5.1
OL-10969-01
Understanding the Cisco Unified SIP Phone 3951, page 1-2
What Networking Protocols Are Used?, page 1-3
What Features are Supported on the Cisco Unified SIP Phone 3951?, page 1-6
Understanding Security Features for Cisco Unified SIP Phone 3951, page 1-9
Overview of Configuring and Installing Cisco Unified IP Phones, page 1-9
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