Reversal Meaning - Mitel SX-5 Manual

SECTION MITL9103 -098 -105-NA
R e v e r s a l M e a n i n g
Description
To indicate incoming calls or disconnect, some Central Offices provide signalling, via
Tip-Ring Reversal or Third Wire change of state. The SX-5 can be programmed to
recognize these signals.
Conditions
In all cases, Tip-Ring Reversal is equivalent to Third Wire change of state.
Reversal Meaning must be programmed for each trunk.
Both bunks are nonpolarized. in that on power-up, Tip may be more negative
than Ring or vice versa. The SX-5 will consider either state as a valid
quiescent state. Only a change in polarity will be considered as a signal.
Feature Selection
To Define Reversal Meaning:
Lift Control Extension handset
-
dial tone returned.
Dial 431488 where
A
=
1 if the reversal meaning for bunk 1 is to be programmed.
A
=
2 if the reversal meaning for trunk 2 is to be programmed.
B =
1 if reversal means Not lncoming Call or Disconnect
B
=
2 if reversal means lncoming Call.
B
=
3 if reversal means lncoming Call or Disconnect
Replace handset
-
the reversal meaning selected is enabled.
Set SW2 to CLOSED.
Operation
Automatic
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