Hi I have the following setup Cell Phone "Any Possible Number" ----Calls a DID number-----> DID Provider --> Forwards Call to my Openser --> OpenSer Server--> Forwards Call to Asterisk with A2B --> Forwards it to the cell phone of the user In short, a person can call a DID and it gets forwarded to Openser, if the user is online using his sip phone, the sip phone rings and all is OK. However, if the user is not online I do forward that call to Asterisk and I want to forward it to the cell phone of the user. The problem is that the FROM field and the SOURCE URI keep changing,they are in the from phonenumberOfCaller(a)DID_Service_Provider.com and I do want to charge the user for the call. To do that I need to have the FROM field and the source URI to be the USER ID so that I can charge him for the call. So, I might have to change the source URI and FROM field of the packet and send it to asterisk..it would send the packet back to Openser and I have to change those back to what they were and then send it to the DID provider. Might sound confusing, and it might sound stupid. Please help me set this straight, can it be done ? Maybe not ? Maybe Yes... Any suggestions are welcome. With Regards Ali Jawad System Administrator Splendor Telecom (www.splendor.net) Beirut, Lebanon Phone: +961 1 373725 Fax: + 961 1 375554