[OpenSER-Users-ES] ayuda con Register

hola,, tengo la siguiente estructura: Dos cliente SIP en una red privada los cuales se salen a trave de un Router IP, mi servidor OpenSER tiene IP publica. Cuando quiero registrar uno de mis clientes IP, sucede los siguiente: U 200.30.xxx.xxxx:60049 -> 200.30.xxx.xxxx:5060 ##### Mi Router a mi Openser REGISTER sip:200.30.xxx.xxx SIP/2.0. ### Mi openser Via: SIP/2.0/UDP 192.168.1.31;branch=z9hG4bK5bbd0e954febb14c. ### mi cliente SIP From: "102" <sip:102@200.30.xxx.xxx;user=phone>;tag=5e474aa6e3664e89. #### mi openser To: <sip:102@200.30.177.115;user=phone>. #### mi openser Contact: <sip:102@192.168.1.31;user=phone>. ### cliente SIP Supported: replaces. Call-ID: 2ef635e380d63096(a)192.168.1.31. CSeq: 100 REGISTER. Expires: 3600. User-Agent: Grandstream BT120 1.0.8.23. Max-Forwards: 70. Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE. Content-Length: 0. U 200.30.177.115:5060 -> 200.30.177.124:5060 ### mi openser a mi Router SIP/2.0 403 Forbidden. Via: SIP/2.0/UDP 192.168.1.31;branch=z9hG4bK5bbd0e954febb14c;received=200.30.xxx.xxx. ### Router From: "102" <sip:102@200.30.xxx.xxx;user=phone>;tag=5e474aa6e3664e89. #### mi openser To: <sip:102@200.30.xxx.xxx;user=phone>;tag=c13c52eb7bdc65672ab688ebbd724ddf.4c20. ### mi openser Call-ID: 2ef635e380d63096(a)192.168.1.31. ### cliente SIP CSeq: 100 REGISTER. Server: OpenSER (1.2.2-notls (i386/linux)). Content-Length: 0. Que hay de malo en todo esto... ayuda por favor -- Ronmel Jiron Sandres