Lucent Technologies 555-661-150 manual NI-1 BRI, Opt, Opx

MERLIN LEGEND Communications System Release 6.1	Issue 1
Network Reference 555-661-150	August 1998
Glossary
	Page GL-20

N

network	Configuration of communications devices and software
	connected for information interchange.
network interface	Hardware, software, or both that links two systems in an
	interconnected group of systems, for example, between the
	local telephone company and a PBX.
NI-1 BRI	(National Integrated Services Digital Network 1 Basic Rate
	Interface) A type of digital facility that carries the equivalent
	of three lines. Two are called B-channelsand provide voice
	and data communications services. A third D-channel
	controls signaling and maintains operations on the
	B-channels.
non-local user	In a private network, a user who is connected to another
	system in the network and not to the local system.
non-local dial plan	In a system that is part of a private network, a list of
	extension ranges that the local system references in order
	to route non-localintersystem calls via UDP.
non-satellite	In a private network, a communications system that is
system	directly connected to and located more than 200 miles from
	the local system.

O

off-hook	Telephone is said to be off-hook when the user has lifted
	the handset, pressed the Speakerphone button to turn on
	the speakerphone, or used a headset to connect to the
	communications system or the telephone network.
off-premises	See OPT.
telephone
ones density	Requirement for channelized DS1 service to the public
	network that eight consecutive zeros cannot occur in a
	digital data stream.
on-hook	Telephone is said to be on-hook when the handset is hung
	up, the speakerphone is turned off, and the user is not
	using a headset to connect to the communications system
	or the telephone network.
OPT	(off-premises telephone) Single-line telephone or other
	tip/ring device connected to the system via a 008 OPT
	module in the control unit. Appears as an inside extension
	to the system, but may be physically located away from the
	system.
OPX	(off-premises extension)