Glossary GL-13

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Maintenance

The RS-232C (H00) connector on the rear of the cabinet that connects the LMT (over

Port (MAINT)

cables) or the RMT (over a modem) to AUDIX.

Maintenance

The process of closing all filesystems, leaving them unmounted and inaccessible

Shutdown

(normally used before a system power down). This may be done with the MI toggle

 

switch or shutdown form.

Major Alarm

An alarm detected by AUDIX software that affects at least one fourth of the AUDIX

 

ports in service. Often a major alarm indicates that no AUDIX service is available.

Manager

A software module responsible for the operation of one part or function of the system.

Memory

A device which can store logic states such that data can be accessed and retrieved.

 

Memory may be temporary (such as system RAM) or permanent (such as disk).

Message

Groups of messages in subscribers’ mailboxes. Categories include new, unopened,

Categories

and old for the incoming mailbox, and delivered, accessed, undelivered, not

 

deliverable, and file cabinet for the outgoing mailbox.

Message Center

An AP call-answering feature that allows an agent to enter a message for a busy or

 

unanswered extension. Also called Message Center Service (MCS).

Message Line

The third line from the bottom of a terminal screen where help information and error

 

messages are displayed.

Message-

An LED on a voice terminal (telephone) that alerts subscribers to new messages.

Waiting Lamp

Also called Automatic Message-Waiting (AMW) Lamp.

MI Toggle

A switch on the MI (TN511) circuit pack used to shut down system software by

Switch

moving it off-center (left or right), or reinitialize a system when returned to center

 

position.

Microcom

This provides on-line compressing data for increased throughput, provides error

Networking

detection, correction, and retransmission, and provides data rate matching with the

Protocol

opposite endpoint.

Minor Alarm

An alarm detected by maintenance software that affects less than one fourth of the

 

AUDIX ports in service, but has exceeded error thresholds or may impact service.

Mirroring

See File Redundancy.

Mode

An operating state in which the system can perform certain tasks. AUDIX modes

 

include control mode, normal mode, administrative or maintenance shutdown mode,

 

and initialization.

Modem

A modulator/demodulator device for transmitting analog (continuous) signals.

Modem Pool

A group of modems set up to accept incoming data calls from a remote device. The

 

switch’s modem-pooling feature inserts modems into the link automatically. The

 

transmission rate could range from 1200 to 9600 bps depending on facilities.

Modular

A data device that converts RS-232C or RS-449 protocol signals to Digital

Processor Data

Communications Protocol (DCP) used by the System 75/85 switch. MPDMs may

Module

connect AUDIX to a switch DCIU or SCI link, or connect terminals to a switch port

(MPDM)

board.

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AT&T 585-300-903 Port Maint, Major Alarm, Manager, Memory, Categories, Message Center, Message Line, Waiting Lamp, Switch