AudioCodes Mediant 4000 SBC User Manual page 952

CHAPTER 60 Configuration Parameters Reference
'Registration Time'
configure voip > sip-
definition proxy-and-
registration >
registration-time
[RegistrationTime]
'Re-registration Timing [%]'
configure voip > sip-
definition proxy-and-
registration > re-
registration-timing
[RegistrationTimeDivider]
'Registration Retry Time'
configure voip > sip-
definition proxy-and-
registration >
registration-retry-time
[RegistrationRetryTime]
'Max Registration Backoff Time'
configure voip > sip-
definition proxy-and-
registration > max-
registration-backoff-time
[MaxRegistrationBackoffTime]
Parameter Description
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.
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.
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.
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).
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Mediant 4000 SBC | User's Manual