Codec Mode; Intercom Mode; Other Configurations For The Intercom Mode - Prodys PortaNet User Manual

V.4.2.1

CODEC mode

In this operation mode, this output contains the signal coming from the
second line (Talkback Rx).
V.4.2.2

INTERCOM mode

In this mode the audio signal going through line 2 (Talkback Tx) is added to the
AUX output.
V.4.2.3

Other configurations for the Intercom mode

This diagram shows all the signals which can be routed to the 'aux' output:
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