First off I've never worked on a nortel system, to help a friend I will try. They want to add a fax machine using the ata ports, this will be strictly outgoing.My question is, is the ata ports internal and if so what lead designation do they use. There is no documentation on prem.The system is a Nortel Norstar Modular ICS 5.0.
Many thanks in advance,Bill7746
Many thanks in advance,Bill7746