Installation Manual 44 Document #: LTRT-10205
Mediant 800 MSBG
3.2.1.5 Configuring Data-Routing Quality of Service
This section describes how to configure the device to guarantee appropriate handling of
VoIP services, which are delay-sensitive. VoIP traffic needs to be prioritized over other
classes of traffic. This is achieved by configuring Quality of Service (QoS).
The QoS configuration includes the following stages:
Defining the total WAN bandwidth assigned, for example, by your Internet Telephony
Service Provider (ITSP) - refer to 'Defining Total WAN Bandwidth' on page 50
Definin
g traffic shaping classes with the minimum bandwidth guaranteed to VoIP traffic
(refer to 'Defining VoIP Tx Shaping Class' on page 50)
Assig
ning the above VoIP traffic class to VoIP RTP media packets and VoIP signaling
(UDP, TCP, and TLS) traffic matching rules (refer to 'Defining VoIP Traffic Matching
Rules' on page 50)
3.2.1.5.1 Defining Total WAN Bandwidth
To define traffic shaping on the device so that packets will not be “dropped” by your ITSP,
you should configure your device with the total WAN bandwidth allocated by your ITSP. In
other words, the ITSP can be considered the bottleneck of the network and thus, the device
needs to accommodate its outgoing traffic to this bandwidth.
Note: When the device uses T1 WAN interface, the maximum T1 WAN Tx
bandwidth is 1.544 Mbps.
¾ To define traffic shaping for total WAN bandwidth:
1. Open the 'Traffic Shaping' page (Configuration tab > Data menu > QoS submenu >
Traffic Shaping).
Figure 3-12: Traffic Shaping Page
2. Click the New
button; the following page appears.
Figure 3-13: Selecting Device for Traffic Shaping
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