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.