SIP TRUNK ERROR
Hello dear ones.
We are currently configuring a trunk link with an operator.
The SBC is configured as a SIP Interconnect and will act as a voice gateway to transfer packets from MSC A to MSC B and vice versa.
Currently the problem is twofold:
When MSC A sends a SIP Invite, the SBC forwards it to MSC B but receives a bad request (error 400)
The second problem is that when SBC B sends a SIP Invite, the signalling works normally but we don't get a dial tone.
I would like to point out that I am using the same interface (IP address) for another trunk link but I have changed the ports.