Instruction manual

GLOSSARY
R
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 that 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’s coverage path that determines
when an incoming call is redirected to coverage.
Remote Home Numbering Plan Area Code (RHNPA)
A foreign numbering plan area code that is treated as a home area code by the
Automatic Route Selection feature. Calls can be allowed or denied based on the area
code and the dialed central office code rather than just the area code. If the call is
allowed, the Automatic Route Selection pattern used for the call is determined by these
six digits.
Removable Mass Storage Subsystem (RMSS)
A tape storage device that stores the software information for the system.
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.
S
Service Profile Identifier (SPID)
A unique number of up to 10 digits, assigned to an Integrated Services Digital Network
(ISDN) terminal, that will be used for terminal identification during level-3 initialization.
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