Instruction manual

CLASS: Visual Message Waiting Indicator Page 1137 of 3156
Features and Services
Lamp audit does not apply to the CLASS VMWI feature.
There is a 2 1/2 hours time limit for a retry in the case of a pending message.
Up to 255 CLASS modem units can be configured on a Meridian 1 system,
and up to 32 CLASS modem units can be configured on any Extended
CLASS Modem card.
Feature interactions
Attendant Console
When a CLASS set that is on a call with the attendant goes on-hook, the call
will not be released until the attendant releases the call. The CLASS VMWI
feature will wait until the call is actually disconnected before sending the
VMWI message to the CLASS set that had already gone on-hook
Call Party Control Incoming
When a CLASS set on an active call is placed in Call Party Control Incoming
(CPCI) state, the set will not be presented with any other incoming call. The
CLASS VMWI feature will not send the VMWI message to the CLASS set
to turn the visual indication ON or OFF, until the set releases the active call.
Make Set Busy
When a CLASS set is in the Make Set Busy state, the set will not be presented
with incoming calls. Although no incoming calls are presented to the set,
VMWI message can still be sent to the CLASS set to turn the visual indication
ON or OFF, as long as the set is in the idle and on-hook state.
Meridian Mail
The CLASS VMWI feature makes use of Meridian Mail by having the
Meridian Mail functionality communicate with the Meridian 1 system to
inform the CLASS set to turn the visual message waiting indicator ON or
OFF. The Meridian 1 software determines the appropriate type of protocol
based on the configuration of the CLASS set, and sends it to the set to turn
the visual message waiting indicator ON or OFF.
Message Waiting
In order to support the CLASS VMWI functionality on a CLASS set, the
Message Waiting feature has been enhanced to turn the message waiting
indicator ON or OFF on the CLASS set through FSK signalling.