Nortel BCM 3.7, Manual

Page: 573 / 1004

Configuring MWI on DPNSS 1 networks 573
Programming Operations Guide
How the intrusion hierarchy works:
— Break-in is allowed if Attendant telephone is High and caller telephone is Medium.
— Break-in is not allowed if Attendant telephone is Medium and caller telephone is high.
Configuring MWI on DPNSS 1 networks
Message Waiting Indication (MWI) is a DPNSS 1 feature for Business Communications Manager
Call Services. Messages are received at a centralized location, to a pre-determined telephone,
where they are processed and forwarded to the target telephone. This centralization relieves the
network processing load, making the system more efficient. MWI provides users with the ability to
scroll through, erase and reply to messages.
When there are messages to retrieve,
Message for you
appears on the telephone display.
After all the messages are retrieved by the user, a Message Waiting Cancellation (MWC) is sent
from the message center, and the user telephone no longer displays an MWI message.
MWI allows the user to reply or call back to the message center.
This feature is only supported on Business Communications Manager target line s .
Restrictions by telephone type:
• 7000—associated LED flashes
• ATA2—not supported.
• GASM — supported
• ISDN— not supported.
• Portables—not supported.
The following sections describe how to set Message Waiting Indication:
• Assign message center to a line ( “Assigning message centers to a line” on page 573 ).
• Select message center for use. ( “Selecting a message center” on page 575 )
• Assign the line to a telephone to Appear and/or Ring. ( “Setting Message Waiting Indication”
on page 576 )
Assigning message centers to a line
You need to assign any one of five, or None, of the message centers to the line. There can be as
many as five message centers in a network; that is, five telephones on the Business
Communications Manager system can act as mailboxes in the message centers offered by five
different PBX system
s on the network. These PBXs may also be from different manufacturers.
Thus, for each message center there may be different:
• numbers to be dialed to reach the mailbox from the telephone
• MWI strings received, indicating that the center has a message in the mailbox
• MWC strings received, indicating that the voice mails have been retrieved