We are planning a new voip system. The trunk is provided to us on a private 10.x.x.x/29 range, and therefore not available direct to our end customers. We plan to have some kind of SIP/RTP proxy in front of the trunk, and a PBX in front of this. The trunk doesn't have any authentication, the end customers should connect and authenticate to the PBX in front, and the RTP streams should terminate to the proxy.
Is this possible to achieve by using Kamailio and RTPProxy?
Trunk | | 10.x.x.x/29 | SIP Proxy | PBX Asterisk etc. | Customer
I have tried many different configurations and browsed every bundled example and web, but still I am not able to do what I want. This have already given me some grey hears, so I guess it's time to check if this is even possible. If not, is there any other approach that is more recommendable? If someone has done this before I would appreciate some example configuration that I could work with.
Regards
Espen, Norway