From software 2.23, it is possible to DE-REGISTER the SIP account if the DECT handset is:

  • Switched off
  • Out of range (Can take up to 3 hours for the system knows the handset is out of range)

Today it can be changed only via auto-provisioning


0 = (Default) SIP account is not DE-REGISTERED

1 = REGISTER with Expires = 0 is send when the handset is out of range or switched off.


<param name="SipProvider.0.WithDeregOnHsNotReachable" value="1"/>