For outgoing calls, VoicePulse FIVE uses the SIP From: header of your request to determine the caller-id number. By default, the username portion of the From: header is used:
The part highlighted in green is the username portion of the From header. For outbound calls to the PSTN, it must be a valid 10-digit phone number (or 10 zeros if you wish the caller-ID to be blocked) in order to be displayed properly.
For additional information on how Caller ID works on FIVE, including treatment of the SIP Privacy header, please see the article How FIVE treats the SIP "Privacy" header.
Keywords: Caller ID, Caller-ID, SIP Privacy header, set Caller ID,