The RT9080 Subscriber Radio consists of an RT8000 Sub controller board mounted piggyback onto the 9080 interface board. The Sub controller board provides the regular RT8000 C.O. functions and is connected to the radio via the interface board. Radio parameters are programmable from a PC.

Functionally the unit operates like an RT8000 Sub radio.

An off hook condition causes the unit to transmit

Depending on the tone combination received, it will ring Tip to ground or Ring to ground or loop ring.

The unit is transparent to line reversals

Caller ID is not supported