Message Waiting Indication; Fsk Message Waiting Indication; Telephone Line Voltage Polarity Change Mwi; High Voltage Mwi - TIPTEL 140 Bedienungsanleitung

Message Waiting Indication

This device supports different types of Message Waiting Indication. Besides FSK the
type used depends on the MWI switch setting at the back of the device. Please, ask
the installer of your PABX or your network provider which type of MWI is used.

FSK Message Waiting Indication

The special coded caller-ID signal used to indicate message waiting will be
interpreted by the device all the time no matter what position the MWI-switch has.
In case the network provider sends a MWI-signal the LED indicator will light up.
The tiptel 30xx / tiptel.com – family of PABXs support this type of MWI.

Telephone line voltage polarity change MWI

In case the switch is set to PR1 or PR2 the MWI-lamp will light up if the telephone
line voltage changes polarity. In case the MWI-lamp lights up unintentionally just
switch from PR1 to PR2 or vice versa.
Some country versions of tiptel 4011 XT PABXs support this type of MWI.

High voltage MWI

In case the switch is set to HV the MWI-lamp will light up if the telephone line
voltage exceeds 70 Volts.
Message Waiting Indication
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