Loop Key - NEC NEAX 2400 IPX User Manual

CENTRAL OFFICE CALL
A call sent to a business from the external network.

LOOP KEY

Keys on the console that are designated to ring and flash when a call is sent to the console. These calls are usu-
ally from the central office. The term "loop" refers to the wires that run from a central office to a customer
site.
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NEAX 2400 IPX
The entire NEC telephone system, including the system's central processor, lines, telephones and the console.
STATION
A telephone that is part of the NEAX 2400 IPX and has an extension number assigned. Calls from a station
are considered internal calls for the purposes of this guide.
TRUNK
A telephone line that connects a customer telephone system to the external telephone network.
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