User's Manual 646 Document #: LTRT-27045
Mediant 1000B Gateway & E-SBC
Parameter Description
Limit
limit
[SBCAdmissionControl_Limit
]
Defines the maximum number of concurrent SIP dialogs per IP Group,
SIP Interface or SRD. You can also use the following special values:
[0] 0 = Block all these dialogs.
[-1] -1 = (Default) Unlimited.
Limit Per User
limit-per-user
[SBCAdmissionControl_Limit
PerUser]
Defines the maximum number of concurrent SIP dialogs per user
belonging to the specified IP Group, SIP Interface or SRD. You can
also use the following special values:
[-1] -1 = (Default) Unlimited.
[0] 0 = Block all these dialogs.
Rate
rate
[SBCAdmissionControl_Rate
]
Defines the rate (in seconds) at which tokens are added to the token
bucket per second (i.e., token rate).
The default is 0 (i.e., unlimited rate).
Note:
You must first configure the 'Maximum Burst' parameter (see
below) before configuring the 'Rate' parameter.
The token bucket feature is per IP Group, SIP Interface, SRD, SIP
request type, and SIP request direction.
Maximum Burst
max-burst
[SBCAdmissionControl_Max
Burst]
Defines the maximum number of tokens (SIP dialogs) that the bucket
can hold. 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, 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 configured in
the 'Rate' field), the device accepts the first 100 SIP dialogs and
rejects the last one.
The device sends a SIP 480 “Temporarily Unavailable” response when
it rejects requests. Dropped requests are not counted in the bucket.
The default is 0 (i.e., unlimited SIP dialogs).
Note: The token bucket feature is per IP Group, SIP Interface, SRD,
SIP request type, and SIP request direction.
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