I'm removing an InterTel Axxcess and replacing with a Panasonic tde200e. The Intertel has 4 zones of paging 71,72,73,74 that appear to be trunk access codes with an lsc card each trunk tied to Viking PA-2A Is it possible to access all 4 of those trunks with a '70' access code for all page in the phone system? We're trying to figure out how they are doing this.