Chapter

What Networking Protocols are Used?

Table 1-3 Features on the Cisco Unified IP Phone 6961

16

Contacts button

Opens/closes the Directories menu. Use it to access personal and corporate

 

 

directories.

 

 

 

17

HandSet

Phone handset.

 

 

 

What Networking Protocols are Used?

Cisco Unified IP Phones support several industry-standard and Cisco networking protocols required for voice communication. Table 1-4provides an overview of the networking protocols that the Cisco Unified IP Phones 6921, 6941, 6945, and 6961 support.

Table 1-4

Supported Networking Protocols on the Cisco Unified IP Phone

 

 

 

Networking Protocol

Purpose

Usage Notes

 

 

 

Bootstrap Protocol

BootP enables a network device such as

(BootP)

 

the Cisco Unified IP Phone to discover

 

 

 

certain startup information, such as its IP

 

 

 

address.

 

 

 

 

Cisco Audio Session

The CAST protocol allows IP phones and

Tunneling (CAST)

associated applications behind the phone

 

 

 

to discover and communicate with the

 

 

 

remote endpoints without requiring

 

 

 

changes to the traditional signaling

 

 

 

components like Cisco Unified

 

 

 

Communications Manager (Cisco Unified

 

 

 

CM) and gateways. The Cast protocol

 

 

 

allows separate hardware devices to

 

 

 

synchronize related media and it allows

 

 

 

PC applications to augment non Video

 

 

 

capable phones to become video enabled

 

 

 

by using the PC as the video resource.

 

 

 

 

Cisco Discovery Protocol

CDP is a device-discovery protocol that

The Cisco Unified IP Phone uses CDP to

(CDP)

 

runs on all Cisco-manufactured

communicate information such as auxiliary VLAN ID,

 

 

equipment.

per port power management details, and Quality of

 

 

Using CDP, a device can advertise its

Service (QoS) configuration information with the

 

 

Cisco Catalyst switch.

 

 

existence to other devices and receive

 

 

 

 

 

information about other devices in the

 

 

 

network.

 

 

 

 

 

Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)

 

OL-23769-01

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Cisco Systems 6921 manual What Networking Protocols are Used?, Networking Protocol Purpose Usage Notes, Cdp