So, here is the description for the relays and PA systems in connection with ARIA SOHO:
There is a relay in the ARIA SOHO systems, and you can use it cut the audio line for your PA (amplifier) system.
All-call in the ARIA SOHO systems can go to all keysets (internal) or to the PA system (external) or both.
To program relays use PGM168. Use the first contact and set it EXT1. The audio path from your ARIA SOHO system has to be connected to the PA sytem.
One cable go from the ARIA SOHO system MBU cnoonctor PJ2(PJ2 (Blue)-- External PAGE Connection) to the PA system (amplifier)(line in+).
The other cable go from the ARIA SOHO system MBU (PJ2 (Blue)-- External PAGE Connection) to the relay (MJ3 -- Alarm Sensor and External Relay Contact) on the MBU of the ARIA SOHO.
The other pole of this connector (MJ3 -- Alarm Sensor and External Relay Contact) is connected to the PA system.
So, if you make your All-call, the relay will be activated, and the audio from the ARIA SOHO system (e.g. keyset) to sent to the PA system. Could be usefull in sports areas or public swimming pools. ("All persons with blue key-ribbon, must now leave the swimming pool, as their time is out...")
///doktor