
Chapter 32 Private networking: MCDN over PRI and VoIP 299
Networking Configuration Guide
Meridian MCDN call features over PRI SL-1 lines
Besides the general MCDN features described in “Using the MCDN access codes to tandem calls”
on page 257, an MCDN connection with a Meridian 1 voice mail system also provides some
special call features, which are listed in Table 59.
Message Waiting Indication
MWI allows the voice mail host system (Meridian 1) that is designated to receive messages to
notify a target telephone on the BCM of a call waiting using the native MCDN MWI or MIK/MCK
message indicators on the Meridian telephones. This feature works for both Nortel and third-party
voice mail systems. Messages are received at a centralized location, to a predetermined telephone,
where they are processed and forwarded to the target telephone.
MWI allows the user to reply or call back to the message center. The procedure for retrieving
messages is described in the Telephone Features Handbook.
Figure 95 demonstrates how the Meridian responds when a call is forwarded to a CallPilot
mailbox.
Table 59 MCDN feature enhancements
Centralized messaging
• Message Waiting Indication
Centralized Attendant
• “Camp-on” on page 301
• “Break-in” on page 301
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