Okay, I figured it out. I added the following line to the default.xml file, just prior to the "bridge" action: <action application="set" data="effective_caller_id_number=425349${caller_id_number}"/> Now, 425349 is prepended to the outgoing call's caller ID. Best Regards, Jerry -----Original Message----- From: Jerry Richards [mailto:jerry.richards@teotech.com] Sent: Monday, October 19, 2009 9:14 AM To: 'freeswitch-users@lists.freeswitch.org' Subject: Adding Leading Digits To CALLING Number of Outgoing Call How do I use the dial plan to add leading digits to an outgoing call through a gateway? My internal phone number is 5380, but when FS sends the call to the gateway I want the CALLING party to be 4253495380. Best Regards, Jerry