Barnett Engineering ProTalk LINK, Руководство по эксплуатации

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T1 INSTALLATION PAGE 25
Relay Outputs
Each of the 4 relays can be configured during programming to provide
remote control outputs that are operated by DTMF codes.
Figure 22 T1 Input Circuit
Telco RJ11
This is the port that connects to a conventional telephone line and is
used by the T1 module to place calls and announce alarm messages.
There is an on-board modem that provides the ability to answer
incoming data calls if a DTMF modem code has first been entered.
The T1 module can be called through this port by the Link
configuration application, allowing configuration settings to be
remotely changed using the PC. A limited amount of programming
can also be done using a Touch-Tone set to call into the module.
Radio Port
Connection to a land mobile base station is through this port. The
signals available are:
TX Audio from the T1 module to the radio
RX Audio from the radio to the T1 module
PTT Ground closure from the T1 module to activate the radio
transmitter
COS Ground closure from the radio to indicate the radio
channel is busy
A public address system can be connected to the module using just the
TX and PTT lines.