Version 6.2 197 February 2011
SIP User's Manual 3. Web-Based Management
Parameter Description
MaxBurst The maximum number of tokens (SIP dialogs) that the bucket can hold,
where 0 is unlimited (default). The device only accepts a SIP dialog if a
token exists in the bucket. Once the SIP dialog is accepted, a token is
removed from the bucket. If a SIP dialog is received by the device and the
token bucket is empty, then the device rejects the SIP dialog.
Alternatively, if the bucket is full, for example, 100 tokens, and 101 SIP
dialogs arrive (before another token is added to the bucket, i.e., faster
than that defined in the Rate field), then the device accepts the first 100
SIP dialogs and rejects the last one.
Dropped requests are replied with the 486 “Busy Here” SIP response.
Dropped requests are not counted in the bucket.
Note: The token bucket feature is per IP Group, SRD, SIP request type,
and SIP request direction.
3.3.2.12.3 Configuring Allowed Coder Groups
The 'Allowed Coders Group' page allows you to define up to 5 Allowed Coder Groups,
each with up to 10 coders. Allowed Coder Groups determine the coders that can be used
for a specific SBC leg. In other words, the device's SBC application can enforce the use of
specific coders while preventing the use of "restricted" coders. Coders excluded from the
Allowed Coders Group are removed from the SDP offer; only common coders between
SDP offered coders and coders configured in the Allowed Coder Groups are used. In
addition, the order of appearance of coders in the Allowed Coder Group determines the
coder priority (preference), whereby the first coder is given the highest priority. Coders
preference is done on both legs on the original SDP offer without the extended coders, and
the offered side selects its chosen coders from the suggested coders list.
Notes:
• For a list of supported coders, refer to the ini file parameter table
CodersGroup.
• Each coder can appear only once per Allowed Coder Group.
• If Allowed Coder Groups are configured, coders not included are blocked
by the device.
• Allowed Coder Groups are applicable only to audio media.
• Allowed Coder Groups can be assigned to IP Profiles (see ''Configuring
IP Profiles'' on page 143).
• You can also configure Allowed Coder Groups using the ini file
parameter table AllowedCodersGroup.
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