$registeredSender
Check whether the From-URI is registered in the Registrar database and the SIP request comes from a registered Contact IP address and port number.
Syntax:
$registeredSender
Returns:
true – if the sender user is registered in the Registrar database.
false – otherwise
Version Since:
2.4
Where the function can be used:
- Preliminary rules
- Regular rules
Example:
$registeredSender = true
If the From-URI indicates a registered user and the SIP request comes from a registered Contact IP address and port number.