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Protocol
A set of conventions or rules governing the format and timing of message exchanges
to control data movement and correction of errors.
Public Network
The network that can be openly accessed by all customers for local or long-distance
calling.
Queue
An ordered sequence of calls waiting to be processed.
Queuing
The process of holding calls in order of their arrival to await connection to an
attendant, to an answering group, or to an idle trunk. Calls are automatically
connected in first-in, first-out sequence.
Random Access Memory (RAM)
A storage arrangement whereby information can be retrieved at a speed independent
of the location of the stored information.
Read Only Memory (ROM)
A storage arrangement primarily for information retrieval applications.
Recall Dial Tone
Three short bursts of tone followed by steady dial tone; indicates the system has
completed some action (such as holding a call) and is ready to accept dialing.
Redirection Criteria
The information administered for each voice terminal that determines when an
incoming call is redirected to coverage.
Reorder Tone
A fast-busy tone repeated 120 times a minute; indicates that at least one of the
facilities, such as a trunk or a digit transmitter, required for the call was not
available at the time the call was placed.
Single-Line Voice Terminal
Voice terminal served by a single-line tip and ring circuit (2500 series and 7101A
voice terminals or industry standard Dual Tone Multifrequency equivalent).
SAT: (System Administration Terminal)
SIP: (Station Interconnect Panel)
SMDR: (Station Message Detail Recording)
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