I have had this working using a Westel converter to do pri to QSig. However, If you are doing Pri to Pri, then all the settings will have to be done on the Nortel, as there is very little that can be changed on the Intertel.
Can the Nortel be set to anything other than Tie line? The Intertel is expecting to be connected to the public network. Can the Nortel be set as A end, be the clock master , and be set for exclusive channel selection? selection


Answer the Phone, UK