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Glossary 303
Installation and Maintenance Guide
This feature is different from Call Forward in two ways. Line redirection redirects only
external calls, and redirects calls to destinations outside the system. Call forward redirects
calls only to destinations within the system.
Link
If the Business Communications Manager system is connected to a Private Branch
Exchange (PBX), the Link signal is used to access special features. The Link signal can be
included as part of a longer stored sequence on an External Autodial button or in a Speed
Dial code. The Link symbol uses two of the 24 spaces in a dialing sequence.
Local Area Network (LAN)
A network of interconnected computers, such as the Business Communications Manager,
sharing the resources of a single processor or server within a relatively small geographic
area.
mailbox
A storage place for voice messages on Business Communications Manager Voice
Messaging.
Meridian 1 ISDN Primary Rate Interface
This is the MCDN protocol which is used between members of the Nortel Networks
Meridian family of Private Telecommunication Network Exchanges. The signalling
information is carried via time slot 16 of a 2.048 Mbit/s digital transmission system.
MHz
A unit of measure indicating frequency in millions of cycles per second.
microprocessor
The Central Processing Unit (CPU) component that controls all activity inside the
Business Communications Manager.
mirrored disks
In terms of the Business Communications Manager, this refers to the BCM1000
configuration that consists of two hard disks and a RAID board. The RAID board ensures
that both disks contain exact copies of each other. If one disk fails, the other disk assumes
control. Thus, you can time the replacement of the disabled disk to suit your maintenance
schedule. This system does not replace the need for current BRU copies.
modem
A communications device that allows computers to exchange data over telephone lines.
music source
You can connect a radio or other source of music to the system to provide music for the
Music on Hold and Background Music features. A music source is not part of the Business
Communications Manager system components.