AVT MAGIC TH6 POTS Hardware & Software Manual page 55

– Suppress Ring Tone (Level Trig.): This function allows you to sup-
press the ring tone for an incoming call.
– Connect via DTMF/Accept Call In: ...
Example 1:
You want to accept a call on line 1 with TTL 1. The caller is to be
switched directly in the ON AIR mode. After the conversation has been
finished the connection is to be cleared with TTL 1.
Programming:
FIG. 36
9-pol. SUB-D connector
to MAGIC TH6
(TTL/RELAY)
TTL Pin as Output
ATTENTION Please pay attention to the maximum switch current of 10 mA respectively
the maximum switch voltage of 3.3V per TTL output.
!
If a TTL Pin is configured as Output, the event is signalised as change of volt-
age on the TTL Pin from 0V to+3.3V.
Under Positive edge you can select one of the following Function Codes:
– Fixed Low: The TTL Pin is set to 0V permanently.
– Fixed High: The TTL Pin is set to +3.3V permanently.
– Connection Status: Via this function you can signal the connection
status of a line. Select the connection status under Connection Status.
The following options are possible:
– Disconnect
– Calling
– Incoming call
– Connect
O p e r a t i o n v i a W i n d o w s
Positive egde:
Function Code: Call Out/Accept Call In/Drop
Audio Line: ON AIR
Line: Line 1
Phone Number: -
Negative egde:
Function Code: Drop
Line: Line 1
SEQUENCE OF EVENTS FOR THE EXAMPLE 1
Switch
Switch is opened:
Pin 9 = TTL 1 is on +3.3 V (via internal 10 KOhm series resistance)
Switch is closed:
Pin 9 = TTL 1 is set to 0V (Pin 5):
Existing connection is dropped
Switch is opened:
Pin 9 = TTL 1 is set to +3.3V:
Incoming call is accepted.
P C S o f t w a r e
P A G E 5 5