A new timer is implemented in Maxwell B/3 software 2.13, which is available via provisioning and Web-UI.
The new timer shall restart the sending of SUBSCRIBE messages, if they have failed.
Failed Subscription Retry Timer
Default: 300 seconds
Range: 0-9999 seconds
The "Failed Subscription Retry Timer" determines the time when the device starts with a new subscription attempt after the previous attempt failed.
Two cases must be respected:
- The SUBSCRIPTION was rejected through a 4xx, 5xx, 6xx status code.
The timer is fired and the device waits with a new subscription attempt until the time expired.
- The SUBSCRIBE was not responded
The device repeats the subscription in the following interval:
2.1 - 0,5 s, 1 s, 2 s, 4 s, 4 s, 4 s, 4 s, 4 s, 4 s, 4 s
- 2.2 - Afterwards it waits until the Failed Subscription Time elapsed (e.g. 300 seconds) and starts with the interval again.
Go to: Settings - Telephony - VoIP - Failed subscription retry timer
|SIP.Timers.FailedSubscription||0||9999||0 = Disabled|
300 = Default
|Example: <param name="SIP.Timers.FailedSubscription" value="300"/>|