Lucent Technologies Release 8.2 manual Qsig

ISDN Feature Plus B Private Networking

•Feature Plus Message Waiting Indication

~Audio Information Exchange (AUDIX)

Feature Plus MWI depends on the presence of a Message Center. Whenever DEFINITY ECS acts as a Message Center switch, there is an interaction between DEFINITY ECS and AUDIX. DEFINITY ECS must be able to receive messages from AUDIX then, if applicable, send the appropriate Feature Plus MWI message to the network. Similarly, if DEFINITY ECS receives a Feature Plus MWI message, DEFINITY ECS translates the Feature Plus message into the appropriate AUDIX message and passes it to AUDIX.

The only messages that DEFINITY ECS handles are AUDIX messages along the BX.25 link. Feature Plus MWI can interwork with Basic AUDIX, including INTUITY AUDIX, and with DEFINITY AUDIX with the DCIU control link. Feature Plus MWI does not work with the DEFINITY AUDIX that emulates a DCP voice terminal or with versions of AUDIX that communicate to DEFINITY ECS mode codes.

DEFINITY ECS implementation requires that all users on a Served User PBX use the same Feature Plus Message Center. Some of the served users can use a Feature Plus Message Center, while others use a local message center and/or a DCS Remote Message Center and/or a QSIG Message Center. However, some served users on a PBX cannot use one Feature Plus Message Center while other served users on the same PBX use a different Feature Plus Message Center.

~Off-Premise Station

Feature Plus MWI does not work with an off-premise station implemented with a DS1 circuit pack.

•QSIG

Feature Plus signaling links do not support QSIG.

Administration for Network Connectivity
555-233-504 — Issue 1 — April 2000	CID: 77730	359