Lucent Technologies 555-670-111 Manual Do Utilizador

Issue 1

April 1999

Glossary 

GL-10

 

Tie trunk or tandem tie trunk on which the originating end of 
the tie trunk transmits an off-hook signal to the receiving 
end and waits for the receiving end to send an off-hook 
signal followed by an on-hook signal. Also called “dial-
repeating tie trunk.”

System application that allows face-to-face, simultaneous 
video and voice communications between individuals and 
requires high-speed data transmission facilities. See also 

.

Direct Facility Termination. See 

.

Data Hunt Group. Group of analog or digital data stations 
that share a common access code. Calls are connected in 
a round-robin fashion to the first available data station in 
the group.

See 

.

See 

.

Digit (usually a 

9

) or digits dialed by telephone users to get 

an outside line.

Numbering scheme for system extensions, lines, and 
trunks.

Tie trunk on which the originating end of the tie trunk 
transmits an off-hook signal to the receiving end and waits 
for the receiving end to send an off-hook signal followed by 
an on-hook signal. Also called “dial-repeating tie trunk.”

Direct Inward Dial. Service that transmits from the 
telephone company central office and routes incoming calls 
directly to the called extension, 

calling group, or outgoing 

line/trunk 

pool, bypassing the system operator.

Incoming trunk that receives dialed digits from the local 
exchange, allowing the system to connect directly to an 
extension without assistance from the system operator.

Representation of information in discrete elements—such 
as off and on or zero and one. See also 

.

See 

.

See 

.

See 

See