Network Router User Manual

GL-14 Glossary
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Modular Trunk
Data Module
(MTDM)
A Data Terminal Equipment (DTE) device that converts RS-232C or RS-449 signals
to Digital Communications Protocol (DCP) used by the System 75, System 85, or
Generic 1 or 2 PBXs. MTDMs are often used in modem pools.
Mount Point A software abbreviation for a filesystem that allows software to find it independent of
its physical location. Similar to a ‘‘directory.’’
Mount The process of identifying a filesystem to software and make it accessible by the
DBP.
Mounted The state of a filesystem when it is identified to the software and accessible by the
DBP.
Network
Termination 1
(NT1) Unit
A physical and electrical interface between the 2-wire U interface and the 4-wire T
interface. The NT1 unit marks the boundary between Customer Premises Equipment
(CPE) and the ISDN network.
Networking An R1V3 AUDIX feature that allows the customer to link together up to 100 remote
AUDIX machines for a total of up to 36,000 subscribers.
Nonstandard
Boot
A manual initialization option run by typing ‘‘n’’ after the standard/nonstandard boot
question. This must be followed with controller, device, and boot filesystem
information.
Nonstandard
Initialization
A manual initialization option run by typing ‘‘n’’ to the standard/nonstandard
initialization question. Subsequent questions allow you to specify a type of
initialization.
Normal Mode The state of the AUDIX system after hardware initialization, where software is
running and maintenance and administration forms are available.
Not Deliverable
Message
A message that could not be delivered after a number of attempts specified by the
system administrator (up to ten). This usually means the subscriber’s mailbox is full.
Null Modem A device that rearranges (crosses over) the leads in a cable, allowing signals to be
exchanged between two Data Terminal Equipment (DTE) devices. A null-modem
cable is required to directly connect a display terminal to the AUDIX MI
administration or maintenance connectors in a hard-wired local installation.
On-Line Help A feature introduced in AUDIX Enhanced software allowing system administrators
and maintenance personnel to obtain screen form information by pressing a key for
the PATH line, field, or form.
One-Cabinet
AUDIX
Current name for the 16-port AUDIX-S (Small) system. This half-height cabinet
supports up to 2,000 subscribers. See AUDIX-S.
Operating
System
The set of programs that runs the hardware and interprets software commands.
Opening a
Filesystem
The process of making an inactive filesystem capable of providing service through a
restart or a reboot.
Oryx/Pecos The AUDIX operating system (application software shipped on the generic program
cartridge from the factory), a set of programs that runs hardware and interprets
software commands.