Configuring Voice Interfaces - Cisco Catalyst 4500 Series Software Configuration Manual

Configuring Voice Interfaces

This chapter describes how to configure voice interfaces for the Catalyst 4500 series switches.
This chapter includes the following major sections:
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For complete syntax and usage information for the switch commands used in this chapter, see the
Note
Cisco IOS Command Reference Guides for the Catalyst 4500 Series
If a command is not in the Cisco Catalyst 4500 Series Switch Command Reference , you can locate it in
the
About Voice Interfaces
Catalyst 4500 series switches can connect to a Cisco 7960 IP Phone and carry IP voice traffic. If
necessary, the switch can supply electrical power to the circuit connecting it to the Cisco 7960 IP Phone.
Because the sound quality of an IP telephone call can deteriorate if the data is unevenly sent, the switch
uses quality of service (QoS) based on IEEE 802.1p class of service (CoS). QoS uses classification and
scheduling to transmit network traffic from the switch in a predictable manner. See
"Configuring Quality of Service,"
You can configure the Cisco 7960 IP Phone to forward traffic with an 802.1p priority. You can use the
CLI to configure a Catalyst 4500 series switch to honor or ignore a traffic priority assigned by a
Cisco 7960 IP Phone.
The Cisco 7960 IP Phone contains an integrated three-port 10/100 switch. The ports are dedicated
connections as described below:
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Figure 46-1
About Voice Interfaces, page 46-1
Configuring a Port to Connect to a Cisco 7960 IP Phone, page 46-2
Configuring Voice Ports for Voice and Data Traffic, page 46-3
Overriding the CoS Priority of Incoming Frames, page 46-4
Configuring Power, page 46-5
Cisco IOS Master Command List, All
Port 1 connects to the Catalyst 4500 series switch or other device that supports voice-over-IP.
Port 2 is an internal 10/100 interface that carries the phone traffic.
Port 3 connects to a PC or other device.
shows one way to configure a Cisco 7960 IP Phone.
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
C H A P T E R
Releases.
for more information on QoS.
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Switch.
Chapter 44,
46-1