Cisco 7975G Administration Guide - Page 15

1 C H A P T E R An Overview of the Cisco Unified IP Phone The Cisco Unified IP Phone 7975G is a full-featured telephones that provides voice communication over an Internet Protocol (IP) network. These phones function much like digital business phones, allowing you to place and receive phone calls and to access features such as mute, hold, transfer, speed dial, call forward, and more. In addition, because Cisco Unified IP Phones are connected to your data network, they offer enhanced IP telephony features, including access to network information and services, and customizeable features and services. The phones also support security features that include file authentication, device authentication, signaling encryption, and media encryption. The Cisco Unified IP Phone 7975G provides a color touchscreen, support for up to eight line or speed dial numbers, context-sensitive online help for buttons and features, and a variety of other sophisticated functions. A Cisco Unified IP Phone, like other network devices, must be configured and managed. These phones encode G.711a, G.711µ, G.722, G.729a, G.729ab, iLBC, and decode G.711a, G.711u, G.722, iLBC, G.729, G729a, G729b, and G729ab. These phones also support uncompressed wideband (16bits, 16kHz) audio. This chapter includes the following topics: • Understanding the Cisco Unified IP Phone 7975G, page 1-2 • What Networking Protocols Are Used?, page 1-4 • What Features are Supported on the Cisco Unified IP Phone 7975G?, page 1-7 • Understanding Security Features for Cisco Unified IP Phones, page 1-9 • Overview of Configuring and Installing Cisco Unified IP Phones, page 1-17 Caution 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, refer to the manufacturer documentation of the interfering device. OL-14640-01 Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 6.1 1-1