Looks like i managed to figure it out, the port fowarding wasn't working correctly (was using a service object on the ASA, did individual fowarding rules to a second ip address that i didn't know about on the officeserv and the audio start flowing), rining was due to a misconfiguration, the phone that they gave me appearantly was never setup for i ncoming calls, only to have calls transferred to it, after digging through giant manuals and the configs on the officeserv i managed to figure it out.
We have a officeserv 7200 that we have setup, internally it uses analog, externally though we are using ITP-5121D's to connect to the phone system across the Internet. For some reason though I cannot get the audio to flow both ways. Here is the setup at both sites:
Site A (Has officeserv 7200):
Forwarded UDP ports 30000-30031 for call audio
UDP and TCP ports 9000-9001 for phone communication
UDP port 6000 for phone registration
All are fowarded to the officeserv's ip address
Site B (has remote phone):
Have tried some different port fowards on this side to the phones IP but I don't think that is the issue in this case, it uses a set port after the UDP connection is established, it doesn't change on the otherside as i've verified through the logs on both firewall's
1. Call audio can be heard going into the 5121, call audio cannot be heard coming from the 5121
Samsung 5121 --x--> Caller
Caller ---->Samsung 5121
2. When placing calls to the phone it doesn't ring, only its green extension light will flash on the phone.
3. Sometimes when calling the phone it will ring once, the extension light will go red like the call has been answered, and then on the caller side a screeching sound can be heard. when you try to pick up the extension with the red light it will give you a busy signal. This seems to follow a loose pattern of, first call, you get a screech, make a call right afterwards, no screech, but no ring on the samsung side, you can pick up the call if you press the flashing extension light but you still get oneway call audio.
Thank you in advance for any help.