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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
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 the following 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
Cisco 7960 IP Phone
Catalyst
3524-PWR XL
802.1Q trunk
PC
33048
IP
