Technical data

PAGE 57
Windows PC Software
5.6.1.2.4 Relay / TTL
The MAGIC TH2 system incorporates three GPIO Pins (TTL) which can be
programmed separately as input or output. Additionally, two Relays are
available.
The operating mode of a TTL-Pin - Input or Output is selected via the option
Direction.
The following specification accounts for all three configuration windows
TTL1, TTL2 and TTL3.
TTL-Pin as input
FIG. 23 TTL-PIN AS INPUT
If you use a TTL-Pin as Input, you can program two different functions sepa-
rately when edges change:
• Positive edge: The event is activated when the voltage on the TTL-Pin
changes from 0V to+5V.
• Negative edge: The event is activated when the voltage on the TTL-Pin
changes from +5V to 0V.
The following functions can be configured (Function Code):
– Idle: No function, the Pin is not used.
– Call Out/Accept Call In:
Via this function you can establish a connection to a certain Phone
Number. Under Line you select the line (Line 1 or Line 2) on which the
connection is established (only in the ISDN operating mode). Under
Audio Line you select the Audio line (PRETALK, HOLD or ON AIR)
which is activated when the partner accepts the call.