IP Phone User Manual

7-3
User Guide for CiscoWorks QoS Policy Manager 4.1.6
OL-23444-01
Chapter 7 Provisioning: Configuring QoS for IP Telephony
Using QPM to Configure QoS for IP Telephony
Table 7-1 explains the network points that require QoS configuration for IP telephony.
Related Topics
• Understanding QoS for IP Telephony, page 7-1
• Using QPM to Configure QoS for IP Telephony, page 7-3
Using QPM to Configure QoS for IP Telephony
The QPM IP Telephony application provides a solution for configuring QoS for voice traffic in an
AVVID network.
The solution is an IP Telephony wizard that creates voice policies at each network point that requires IP
telephony QoS configuration.
Voice policies are policies that contain the QoS properties and traffic rules for each relevant point in the
IP telephony network. A voice policy contains a voice role attribute, which specifies the role of an
interface, according to its type, function and location on the network, such as, IP phone, Switch to WAN
Router. QPM allows you to modify properties and traffic rules of certain voice policies created by the
wizard, to suit specific network configurations, as required.
The IP Telephony wizard creates voice policies from voice policy templates which are provided by QPM
in the Policy Templates library. These templates follow the IP telephony QoS guidelines, described in
the IP Telephony QoS Design Guide:
www.cisco.com/warp/customer/771/srnd/qos_srnd.pdf
If the required templates do not exist during IP telephony QoS configuration, they can also be generated
by the wizard and stored in the library.
Some templates that are provided by QPM, such as ATM links, might not be used by the IP Telephony
wizard.
Table 7-1 Network Points Requiring QoS Configuration
Network Point
in Figure 7-1 Description
1 Access switch—IP phone ports
2 Layer 3 QoS-aware access switch (with PFC)—SoftPhone port
3 Layer 3 QoS-aware access switch (with PFC)—CallManager
port
4 Layer 3 QoS-aware access switch (with PFC) uplink port to
distribution switch (with PFC)
5 Distribution switch (downlink) port to Layer 3 QoS-aware
access switch (with PFC)
6 Distribution switch (downlink) port to Layer 2 QoS-aware
access switch
7 Layer 3 distribution switch port to WAN router
8 WAN interface
9 Branch office router interface to Layer 2 QoS-aware switch