AudioCodes Mediant 500 MSBR, User Manual

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Version 7.2 1039 Mediant 500 MSBR
User's Manual 74. Configuration Parameters Reference
registrar-transport
[RegistrarTransportType]

[0] UDP

[1] TCP

[2] TLS
Note:

The parameter is applicable only to the Gateway application.

When set to ‘Not Configured’, the value of the parameter
SIPTransportType is used.
Registration Time
configure voip > sip-
definition proxy-and-
registration > registration-
time
[RegistrationTime]
Defines the time interval (in seconds) for registering to a Proxy server.
The value is used in the SIP Expires header. The parameter also
defines the time interval between Keep-Alive messages when the
parameter EnableProxyKeepAlive is set to 2 (REGISTER).
Typically, the device registers every 3,600 sec (i.e., one hour). The
device resumes registration according to the parameter
RegistrationTimeDivider.
The valid range is 10 to 2,000,000. The default is 180.
Re-registration Timing [%]
configure voip > sip-
definition settings > re-
registration-timing
[RegistrationTimeDivider]
Defines the re-registration timing (in percentage). The timing is a
percentage of the re-register timing set by the Registrar server.
The valid range is 50 to 100. The default is 50.
For example: If the parameter is set to 70% and the Registration
Expires time is 3600, the device re-sends its registration request after
3600 x 70% (i.e., 2520 sec).
Note : The parameter may be overridden if the parameter
RegistrationTimeThreshold is greater than 0.
Registration Retry Time
configure voip > sip-
definition settings >
registration-retry-time
[RegistrationRetryTime]
Defines the time interval (in seconds) after which a registration request
is re-sent if registration fails with a 4xx response or if there is no
response from the Proxy/Registrar server.
The default is 30 seconds. The range is 10 to 3600.
Note: Registration retry time can also be configured with the
MaxRegistrationBackoffTime parameter.
Max Registration Backoff
Time
configure voip >
sip-definition
proxy-and-
registration > max-
registration-
backoff-time
[MaxRegistrationBackoffTi
me]
Defines a dynamic time-to-wait interval before the device attempts to
register the SIP entity again after a registration failure. The parameter is
applicable only to registrations initiated by the device on behalf of SIP
entities (for example, User Info, Accounts, Endpoints or the device
itself) with a SIP proxy server (registrar).
The valid value is 0 to 3000000 (i.e., 3 million seconds). The default is 0
(i.e., disabled).
In contrast to the RegistrationRetryTime parameter, which defines a
fixed time to wait between registration attempts due to registration
failure, this parameter configures the device to increase the time-to-wait
interval for each subsequent registration attempt (per RFC 5626,
Section 4.5) for a specific registration flow. In other words, the interval
changes between registration attempts.
The parameter operates together with the RegistrationRetryTime
parameter. When the MaxRegistrationBackoffTime parameter is
configured, the wait-time before another registration attempt increases
after each failed registration (until it reaches the maximum value
specified by the parameter).
The device uses the following algorithm to calculate the incremental
augmented wait-time between each registration attempt:
Wait Time = min (max-time, (base-time * (2 ^
consecutive-failures)))