Nortel Networks NN43001-106 Attendant Console, Call Party Control Incoming, Message Waiting

528 CLASS: Visual Message Waiting Indicator

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

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 system to inform the

CLASS set to turn the visual message waiting indicator ON or OFF. The

system 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.

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.

In addition, the CLASS VMWI feature can interwork with Stuttered Dial Tone.

The Stuttered Dial Tone functionality (which is part of the Flexible Tones

and Cadences feature) provides an audible indication, rather than a visual

one, that a message is waiting. It is conﬁgured separately from the CLASS

VMWI feature, using the Class of Service (CLS) prompt in LD 10. If the LPA

(Lamp Allowed) response is entered, then a CLASS visual indication is sent.

If the LPD (Lamp Denied) response is entered, then Stuttered Dial Tone is

sent instead. Note that the Stuttered Dial Tone and CLASS visual indication

are mutually exclusive. A CLASS set may receive either Visual or Stuttered

Dial Tone as a message waiting indicator, but not both.

Nortel Communication Server 1000

Features and Services Fundamentals — Book 2 of 6 (C)

NN43001-106 02.04 Standard

Release 5.5 9 May 2008