Station Specialties,
I said the CO line cards do not use the AG AB for talk voltage. The circuit works with Central Office supplied voltage. The BG and BB are used on the CO cards for relay operation and A lead control. In this case, the ITT 601 has NO BG and BB. The AG and AB is all that is supplied for both relay control and intercom talk battery.
If Matt1964 wants to use the AG AB for talk battery, he needs to filter it better than it is.
Rcaman
