Acejavelin,
Unfortunately I don't work on the 3300, at least not yet, but the technician working on it states there is an SBC provided by Charter. Since this is the first time we have tried to setup a 3300 with Charter SIP trunks I was trying to figure out how it needed to be programmed. As there isn't a SIP CoE document for how to program it I figured someone on the Mitel Forums might have done it even without the document.
The only post I found on it was from Ralph and it was a few years old without any replies to the issues he was having; hence my post.
Thanks,
TE