Cisco Catalyst 4500 Series Administration Guide

CHAPTER
43-1
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
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43
Configuring Voice Interfaces
This chapter describes how to configure voice interfaces for the Catalyst 4500 series switches.
This chapter includes the following major sections:
• About Voice Interfaces, page 43-1
• Configuring a Port to Connect to a Cisco 7960 IP Phone, page 43-3
• Configuring Voice Ports for Voice and Data Traffic, page 43-3
• Overriding the CoS Priority of Incoming Frames, page 43-5
• Configuring Power, page 43-5
Note For complete syntax and usage information for the switch commands used in this chapter, see the Cisco
Catalyst 4500 Series Switch Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/hw/switches/ps4324/index.html
If a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the
Cisco IOS library. See the Cisco IOS Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/ps6350/index.html
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 Chapter 42,
“Configuring Quality of Service,” for more information on QoS.
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:
• Port 1 connects to the Catalyst 4500 series switch or other device that supports voice-over-IP.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E