To ensure the validity of registration information of a voice entity or an SIP trunk account on the
registrar, the voice entity or SIP trunk account must re-register with the registrar at a specified time
before the registration expiration interval is reached. Use the timer registration divider or timer
registration threshold command to set the time when the voice entity or SIP trunk account
re-registers with the registrar.
Use the timer registration divider command to set the expiration percentage. When the time,
which is registration expiration interval multiplied by expiration percentage, is reached, the
voice entity or SIP trunk account re-registers with the registrar.
Use the timer registration threshold command to set the lead time before expiration. When
the time, which is registration expiration interval minus lead time before expiration, is reached,
the voice entity or SIP trunk account re-registers with the registrar.
You can configure both timers. In this case, the actual re-registration time is decided by the timer that
expires first. In other words, the voice entity or SIP trunk account tries to re-register with the registrar
when any one of the two timers expires.
Registration timers are available to SIP trunk accounts. For more information about the SIP trunk
You can specify the registration expiration interval by providing the expires keyword in the registrar
or registrar server-group command. Otherwise, the registration expiration interval specified in the
timer registration expires command takes effect. The proxy command does not include the
expires keyword, so when registrations are initiated from a voice entity to the registrar specified by
the proxy command, the registration expiration interval is determined by only the timer registration
To configure registration timers:
Enter system view.
Enter voice view.
Enter SIP client view.
Set the interval for the voice
entity or SIP trunk account to
re-register with the registrar
after registration failure.
Set the registration
Set the registration
Set the lead time before
Configuring call failure-triggered re-registration
If the registrar fails and the registration information is lost after the registrar reboots, a service (such
as a call) initiated by a previously registered number will fail and the registrar will return an error code.
If the failure-triggered re-registration is enabled and the error code is 5xx (except for 502, 504, 505,
and 513), 403, or 408, the device will re-register the number on the registrar.
To configure call failure-triggered re-registration:
"Configuring a SIP trunk
timer registration retry seconds
timer registration expires
timer registration divider
timer registration threshold
The default is 240 seconds.
The default is 3600 seconds.
The default is 80.
The default is 0.