AMX DTMF+ Interface AXB-DTMF+ - Manual (Page 23)

Programming
19 AXB-DTMF+ DTMF+ Interface
(* CONSTANT DEFINITIONS GO BELOW *)
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DEFINE_CONSTANT
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(* VARIABLE DEFINITIONS GO BELOW *)
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DEFINE_VARIABLE
STATE (* STATE OF THE SOFTWARE "STATE MACHINE" *)
BUSY_COUNT (* NUMBER OF RETRIES *)
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(* LATCHING DEFINITIONS GO BELOW *)
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DEFINE_LATCHING
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(* MUTUALLY EXCLUSIVE DEFINITIONS GO BELOW *)
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DEFINE_MUTUALLY_EXCLUSIVE
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(* STARTUP CODE GOES BELOW *)
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DEFINE_START
BUSY_COUNT=0
STATE=255 (* ESSENTIALLY "NO STATE" *)
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(* THE ACTUAL PROGRAM GOES BELOW *)
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DEFINE_PROGRAM
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(* IF KEY 1 ON THE KEYPAD IS PUSHED, PLACE THE *)
(* CARD ON HOOK (IN CASE IT WAS OFF-HOOK). *)
(* WAIT 2 SECONDS BEFORE CHANGING STATE TO *)
(* STATE 2. *)
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PUSH[128,1] (* 1 * )
{
SEND_COMMAND DTMF_CARD,'ON HOOK'
WAIT 20
STATE=2
}
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(* TAKE THE CARD OFF-HOOK. WAIT 2 SECONDS *)
(* FOR DIAL TONE. IF IT IS ( NOT RECEIVED, SEND AN *)
(* ERROR MESSAGE AND SHUT DOWN (GO TO ( "NO STATE"). *)
(*********************************************************************)
Continued