Lucent Technologies 555-233-115 User Manual

Issue 1

April 2000

Glossary and Abbreviations 

GL-23

 

Signaling for which a D-channel carries signaling only for those channels on the same physical 
interface.

Facility-associated signaling

Facility access trunk

Facsimile

Federal Communications Commission

Forced Entry of Account Codes

A specifically defined function or service provided by the system.

A labeled button on a telephone or attendant console used to access a specific feature.

Front-end processor

Facility interface codes

A technology using materials that transmit ultrawideband electromagnetic light-frequency ranges 
for high-capacity carrier systems.

A trunk allocation term. In the fixed allocation scheme, the time slots necessary to support a 
wideband call are contiguous, and the first time slot is constrained to certain starting points.

A trunk allocation term. In the flexible allocation scheme, the time slots of a wideband call can 
occupy noncontiguous positions within a single T1 or E1 facility.

A trunk allocation term. In the floating allocation scheme, the time slots of a wideband call are 
contiguous, but the position of the first time slot is not fixed.

Foreign Numbering-Plan Area

A CO other than the one providing local access to the public telephone network.

A telecommunications channel that directly connects the system to a CO other than its local CO.

An area code other than the local area code, that must be dialed to call outside the local 
geographical area.