I am trying to expand a two cabinet DBS system from a 96-72 cabinet combo to a 96-96 cabinet combo. The system operates normally under its current configuration of 96-72 but when I switch out the 72 port cabinet with a 96 port cabinet the single line ports in the second cabinet wont trip a ring and have very low intercom dial tone. If you call a single line port you can answer and talk normally (talk path levels are OK)
I have tried multiple cabinets and multiple ringer boxes when I put the 72 port cabinet back in everything works fine again. The expansion card Dip switch settings are the same for both combos I have also ran the second cabinet with only one AEC card in it and still get low (Barley audible) intercom dial tone and no ringer voltage This one's kicking my ass HELP!!