Instruction manual

Dial Access to Message Waiting Indicators

Description

This feature allows users to turn on or turn off the message waiting indicator on any voice

terminal in the system by dialing a code.

To turn on a Message LED at some station, the user first goes off-hook, or flashes the

switchhook, to get dial tone.

The user then dials activation code #90 followed by the

extension number of the target station. If the attempt to turn on the LED is allowed, the

caller receives confirmation tone, and the connection is dropped. If the dialed station has no

Message LED or if the extension number is invalid, the attempt is denied and the caller gets

reorder tone.

In conjunction with Dial Access service, each Direct Group Calling (DGC) group in the system

may have one station assigned as receiver of message waiting indications. If a caller dials

the number of a DGC group, the system routes the message waiting request to the extension

of the designated message waiting indication receiver.

The procedure for turning off a Message LED parallels the turn-on procedure. The user gets

dial tone, then dials deactivation code #91 and the extension number of the target station.

Confirmation tone is returned if the attempt is successful, reorder tone if it is not.

Considerations

Dial Access to Message Waiting Indicators provides users with a way to notify any other

terminal that a message is waiting.

This feature does not apply to the feature buttons/LEDs administered for Station-to-Station

Message Waiting.

Interactions

Dial Access to Message Waiting Indicators can coexist with the other messaging services in

System 25. Careful management is essential so that users know where to retrieve their

messages.

The following feature interacts with Dial Access.

Display: When a display telephone set user dials #90 (or #91) followed by an extension

number to light (or extinguish) a Message LED at some station, the dialed digits are

displayed. A confirmation of Message LED activation or deactivation is not displayed.

Hardware Requirements

Only terminals with built-in message waiting indicators (designated MSG or MESSAGE) or

Z3A Message Waiting Indicator adjuncts can be signaled by this feature.

2-139