Sr Burst Ringing Mwi - TIPTEL 140 Manuel D'utilisation

SR burst ringing MWI

"SR" Message Waiting Indication function suit for PABXs sending only a burst-train-
trigger of ringer which represent MWI. The timing of this ringer-burst is T1---T2---T3.
T1 (1st ring frequency = 50Hz, duration 40ms to 200 ms accepted, fixed setting)
T2 (ring off duration 33ms to 495ms, adjustable in steps of 33 ms)
T3 (2nd ring frequency = 50Hz, duration 40ms to 200 ms accepted, fixed setting)
Activation
Set rear-switch to "SR" position and go off hook once to activate.
Adjusting timing of SR signal
After activating SR function set the timing in off-hook mode.
Go off-hook. Press and hold
short press * and the T2 setting (01 to 15) required by your PABX. Press
confirm the setting (LED indicator stops flashing).
e
n
Note:
g Signal recognition tolerates + 66 ms in timing.
Example:
For the initial timing of T2 = 297ms manual setting is T2 = 09 which mean SR-
timing tolerates T2 = 297ms to 363ms).
To get the T2 setting you have to take the real time needed (e.g. 300ms) and divide
it by 33. Take the integer value to store T2.
Both Siemens HighPath 3550 and 3750 support this type of MWI.
Supposed setting for Siemens PABX: T2=09.
Supposed setting for NEC PABX: T2=02.
However, we strongly recommend checking the settings with your PABX installer.
Note:
The Message Waiting Switch is good for operating the phone behind a PABX.
Switch position has to be PR1 or PR 2 for operation on a public line.
Message Waiting Indication
for 3 seconds (LED indicator starts flashing), then
16
to