You don't mention what you have so I'll assume it's CUCM.
No, we do not provide a method for this.
I'd recommend you to reach Paolo (Look at leaderboard) for this since he has a TCL script for this, you'll need H323 GWs.
HTH
java
If this helps, please rate
www.cisco.com/go/pdihelpdesk
HTH
java
if this helps, please rate