Cisco Catalyst 2900 Series XL Especificaciones descargar pdf (Pagina 188)

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Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide

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Chapter 7 Configuring the Switch Ports

Configuring Voice Ports

The Catalyst 2900 XL and Catalyst 3500 XL switches can connect to a Cisco 7960 IP Phone and carry

IP voice traffic. If necessary, the Catalyst 3524-PWR XL 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 transmitted, this

release of IOS supports 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.

The

Cisco 7960 IP Phone itself is also a configurable device, and you can configure it to forward traffic with

an 802.1p priority. You can use the CLI to configure the Catalyst 3524-PWR XL 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 to these devices:

• Port 1 connects to the Catalyst 3524-PWR XL switch or other voice-over-IP device.

• Port 2 is an internal 10/100 interface that carries the phone traffic.

• Port 3 connects to a PC or other device.

Figure 7-2 shows one way to configure a Cisco 7960 IP Phone.

Figure 7-2 Cisco 7960 IP Phone Connected to a Catalyst 3524-PWR XL Switch

Preparing a Port for a Cisco 7960 IP Phone Connection

Before you configure a Catalyst 3524-PWR XL port to carry IP voice traffic, configure the port as an

802.1Q trunk and as a member of the voice VLAN (VVID). See the “Configuring a Trunk Port” section

on page 8-27 for instructions.

Cisco 7960 IP Phone

Catalyst

3524-PWR XL

802.1Q trunk

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Cisco Catalyst 2900 Series XL Especificaciones Pagina 188