Instruction manual

GLOSSARY
Bridge (Bridging)
The sharing of the same extension or line by two or more voice terminals.
Buffer
A circuit or component that isolates one electrical circuit from another. Typically, a
buffer holds data from one circuit or process until another circuit or process is ready
to accept the data.
Bus
A multi-conductor electrical path used to transfer information over a common
connection from any of several sources to any of several destinations.
Bus, Time Division Multiplex
See Time Division Multiplex Bus.
CAM: (Communications Access Manager)
CAS: (Call Accounting System)
CMS: (Call Management System)
CCS (Hundred Call Seconds)
A traffic-measuring unit that expresses the load of one or more traffic-handling
devices. A device used for 1 hour without interruption generates 36 CCS which
equals 1 erlang (see Erlang).
Call Appearance, Voice Terminal
A button (for example, System Access, Bridged Access, Loop, DSS, Flex DSS, or
Auto Intercom) used to place outgoing calls, receive incoming calls, or hold calls.
Two LEDs next to the button show the status of the call appearance or status of the
call.
Central Office (CO)
The location housing telephone switching equipment that provides local telephone
service and access to toll facilities for long-distance calling.
Central Office Exchanges
The first three digits of a 7-digit public network telephone number. These codes are
numbered from 200 through 999 and are sometimes referred to as NNXs.
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