Version 5.8 93 October 2009
SIP User's Manual 3. Web-Based Management
4. Click OK; the following page appears.
Figure 3-72: Defining Device Traffic Shaping
5. Under the 'Tx Traffic Shaping' group, configure the following:
a. Tx Bandwidth: define the device's bandwidth transmission rate limit.
b. TCP Serialization: You can enable TCP Serialization for active voice calls only or
for all traffic. If you select 'Enable', the 'Maximum Delay' field appears for defining
the maximal allowed transmission time frame (in milliseconds) of a single packet.
Any packet that requires a longer transmission time is fragmented to smaller
sections. This avoids transmission of large, bursty packets that may cause delay
or jitter for real-time traffic such as VoIP. If you insert a delay value in
milliseconds, the delay in number of bytes is automatically updated on refresh.
c. Queue Policy: Tx traffic queueing can be based on a shaping class or on the pre-
defined priority levels. Note that when based on shaping class, the class's
bandwidth requirements are met regardless of the priority, and only excess
bandwidth is given to traffic with a higher priority. However, when unlimited
bandwidth is selected for the Tx traffic, the queue policy can only be based on the
pre-defined priority levels.
d. If you selected 'Specify' in the 'Tx Bandwidth' field, then in the 'Tx Traffic Shaping'
section, click the New Entry link; the following page appears:
Figure 3-73: Adding Shaping Class
e. In the 'Name' field, enter a new class name (e.g., Class A), and then click OK to
save the settings; you are returned to the previous page.
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