The stale timer is used to automatically delete SIP clients that have not registered within the given time period.

  1. Choose VoIP > SIP.

  2. Scroll to Stale Client Time.

  3. Enter a number of minutes in the Stale client time (m) field. If no REGISTER requests have been received from the client during this time, the client will be automatically deleted. Default is 1440 minutes. It is recommended that this time be much longer than the normal re-registration period in order to avoid clients being accidentally deleted.

  4. Click Submit. For more information on submitting your configuration changes, refer to Submit Configuration Changes.