Difference between revisions of "TouchLine Key Signaling"

Revision as of 12:32, 10 May 2007

Signalig protocol

To types of signaling protocols used from the stations, Current Signaling and Tone Signaling

a/b-loop (current for display stations in brackets):

c/d-loop:

Station keyboard digits 0 - 9 use sinewave tones in the range 500Hz to 2300 Hz, at 200 Hz steps.

In addition to the keyboard digits 0 - 9 another set of 10 tones are used for DAK signaling for CRM IV, Dual Display and PrisCom stations.

These tones 10-19 are sinewave tones in the range 600Hz to 2400 Hz, at 200 Hz steps.

Master stations use a combination of current signaling (M) and digits:

CRM IV and Dual Display Stations also use a combination of current signaling and digits:

Prefix = ID+C

Priscom Stations uses so called Two Tone signaling which is a combination of Extended Digit Signaling and Digit Signaling:

Substations use current signaling only:

A station using Two Tone Signaling can be configured with acknowledge on DAK keys:

The AMC application will send an acknowledge message by the Display Text Protocol.
The station will acknowled this by sending tone 18.

@@ Line 5: / Line 5: @@
 == Current Signaling ==
-a-b-loop (curreent for display stations in brackets):
+a/b-loop (current for display stations in brackets):
 * Idle current: 3mA (13 mA)
 * Off-hook: 0 mA (10 mA)
 * M-Key: 10 mA (20 mA)
 * C-key: 20-25 mA (30-35 mA)
+c/d-loop:
+* Open: < 1 mA
+* Private: 3 mA
 == Digit Signaling==