Lucent Technologies Release 8.2 manual Interrogation, Interactions

ISDN Feature Plus B Private Networking

Interrogation

When performing an audit, the Served User PBX sends a request towards the Message Center PBX. As a Message Center PBX, the DEFINITY ECS receives the request message, maps it into a MW STATUS REQUEST - SINGLE STATION message, and sends it to AUDIX on the BX.25 link. When AUDIX replies to the DEFINITY on the BX.25 link with a MW STATUS UPDATE, the Message Center PBX sends the information on to the appropriate Served User PBX.

•If it is a Message Center PBX, the MW STATUS UPDATE indicates whether there are any messages waiting, not how many messages are waiting or what media types are these messages. If the MW STATUS UPDATE indicates that there are new messages, then the Message Center PBX sends a message telling the Served User PBX to activate the message waiting indication. Similarly, if the MW STATUS UPDATE indicates that there are no new messages, then the Message Center PBX sends a message telling the Served User PBX to deactivate the message waiting indication.

•If it is a Served User PBX, when the Served User PBX receives the result, it makes sure that the result received from the Message Center matches the state of the Served User’s light.

Interactions

•Automatic Circuit Assurance

Automatic Circuit Assurance (including Referrals) is not activated for calls terminating at the Feature Plus extension.

•Distributed Communication System (DCS) Feature Plus signaling links do not support DCS.

•Feature Plus Centralized AUDIX

~Calling Line Identification Presentation (CLIP)

If the public network supports CLIP and the called user has subscribed to the service, calling party information is available to the called user when messages are retrieved.

~Feature Plus Diversion

Feature Plus Centralized AUDIX relies upon Feature Plus Diversion. When a call covers to AUDIX, it must invoke Feature Plus Diversion to identify the called party to AUDIX.

~Feature Plus Message Waiting

When a calling party leaves a message using Feature Plus Centralized AUDIX, Feature Plus Message Waiting engages and turns on that subscriber’s message waiting indicator.

Administration for Network Connectivity
555-233-504 — Issue 1 — April 2000	CID: 77730	357