AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 275

Glossary
modem pool
module
Multi-Function
Module
multiplexing
Music-on-Hold
network
network
interface
Off–premises
telephone
ones density
OPT
outcalling
out-of-band
signaling
parity
A pair, or group of pairs, of modems and data modules with
interconnected RS-232 interfaces that converts digital
signals to analog, or analog signals to digital, thereby
allowing users with digital data stations to communicate
with users who have analog stations.
A module in the control unit provides the capability to
connect central office trunks and/or telephones to the
system.
See MFM.
A process in which a transmission channel is divided into
two or more channels, either by splitting the frequency band
into a number of narrower bands or by dividing the channel
into successive time slots.
Magic On Hold or a customer-provided music source
connected to the communications system via a loop-start
jack, Most Music-on-Hold equipment is designed for loop-
start operation.
A configuration of communications devices and software
connected for information interchange.
Hardware, software, or both that links two systems in an
interconnected group of systems, for example, between the
local telephone company and a PBX.
See OPT.
The requirement for channelized DS1 service to the public
network that eight consecutive zeros cannot be in a digital
data stream.
A telephone located in a building other than where the
control unit is located.
A feature of the MERLIN MAIL Voice Messaging System
application. When outcalling is activated, the user is
automatically called by the system at a programmed
number when a new message is received in the user's
mailbox.
Signaling that uses the same path as voice-frequency
transmission and in which the signaling is outside the band
used for voice frequencies.
The addition of a bit to a bit string so that the total number
of 1s is odd or even. Parity can be used to detect and
correct transmission errors.
Glossary GL-13