Avaya MERLIN MAGIX Maintenance And Troubleshooting Manual page 283

Maintenance and Troubleshooting
ESF
Extended Superframe
of 24 eight-bit slots and one signal bit (193 bits) in a 24-frame extended
superframe.
ESS
Electronic Switching
developed by Lucent Technologies in which the control functions are performed
principally by electronic data processors operating under the direction of a stored
program.
ETR Telephone
Enhanced tip/ring telephone (Series 4).
Expansion Carrier
Carrier added to the control unit when the basic carrier cannot house all of the
required modules. Houses a power supply module and up to six additional
modules.
Extended Superframe Format
See ESF.
Extension
Endpoint
a telephone with or without an adjunct. Also called "station." See also
Workstation.
Extension Jack
An analog, digital, or
for connecting a telephone or other device to the system. Also called "station
jack."
Extension Programming
Programming performed at an extension to customize telephones for personal
needs; users can program features on buttons, set the telephone ringing pattern,
and so on. See also
Programming.
F
Facility
Equipment (often a Line/Trunk) constituting a telecommunications path between
the system and the telephone company central office (CO).
GL-16
Format. PRI
System. Class of central office (CO) switching systems
on the internal side of the communications system. An extension can be
Tip/Ring physical interface on a module in the control unit
Centralized Telephone Programming
framing format consisting of individual frames
Data
and System