[Asterisk-Users] Asterisk as a UAC forwarded by SER

[Felipe Martins]

Hi everybody,

	I have a SER Server (Sip Proxy / REGISTRAR) and a Asterisk Server (PSTN and other services). I've got some clients that make calls to each other through my SER Server, that's to say, non external or international calls. I would like my clients to make external and international calls through my server but for that they must authenticate at another server to have a valid VoIP phone number. I want them to authenticate at Go2Call VoIP Server to make internatinoal and external calls, but for that i need my ser to forward every call begginning with "1" to Asterisk and Asterisk to auth at Go2Call Server sending username  and password (Funcionality that ser doesn't have) ending the VoIP tunnel and making the call complete. 
	My SER Server is working perfectly, Asterisk is Receiving Ser forwards normally but it can't forward to Go2Call, that is the configuration i'm in need of. I've read many articles and books about the subject at www.voip-info.org but I haven't make up my mind on how to configure Asterisk to do so. Could anyone who have done that give me a hand ?

Thanks in Advance.