This is a property of type String.
You might also be interested in the following properties:
Showing 3 pages using this property.
sip:31457112345@sip1.budgetphone.nl
+sip:test.dtmf@sip5060.net
+, sip:test.echo@sip5060.net
+, sip:test.time@sip5060.net
+,
…