Nortel Meridian Companion, Руководство по установке и обслуживанию

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Page 194 of 206 List of terms
553-3601-220 Standard 4.00 November 1998
Directory Number A number that can be assigned to a single telephone or
to multiple telephones, for example, a portable telephone and a wireline. See
TN.
DN See Directory Number.
event message Event messages are stored in the Event/Alarm log and
displayed on the Administration Terminal during a Maintenance session. They
record a variety of events and activities in the Meridian Companion system.
Event/Alarm log The Event/Alarm log is a list of system generated events
and alarm codes. The Event/Alarm log holds a maximum of 50 events and
should be checked and cleared regularly.
expansion cabinet A cabinet, required for Option 11 systems, that can
accommodate Meridian Companion cards.
exposed wiring Telecommunications circuit wiring outside a building
structure. Such wiring requires use of primary and secondary protectors.
external antenna
A passive radio frequency receiver connected to a Base
Station radio. An external antenna can be used instead of the internal Base
Station antenna to extend radio coverage to hard-to-reach places or locations
where Base Stations cannot be installed.
hand-off An active radio link to a portable is transferred from one Base
Station to another in the Meridian Companion system (that is, when the user
moves from one cell to another). Hand-off occurs when the Controller detects
that the strength and quality of the radio signal have gone below a predefined
threshold and there is a better radio connection available.
Installer password
A one- to six-digit password that is used to prevent
unauthorized access to programming, Maintenance, Memory Reset and
System Startup. The Installer password can be changed in Configuration
programming.
IPE Intelligent peripheral equipment. Meridian Companion cards are
installed on the IPE shelf in Meridian 1 Option 21 through Option 81 systems.