Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Administration For Network Connectivity Instructions Manual

NEMA 
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  Glossary
NEMA
National Electrical Manufacturer’s Association.
NETCON
Network-control circuit pack.
Network
A collection of computer-like devices (nodes) that are connected by, and can 
communicate across, a common transmission medium.
Network Adapter
The interface between a node and the network; has a unique physical address.
Network Interface Card (NIC)
A circuit board that can be fitted to a personal...

Open System Interconnect (OSI) Model   Glossary
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OOpen System Interconnect (OSI) Model
An International Standards Organization (ISO) interoperability specification. 
OSI defines standard services that compliant communications networks and 
equipment must provide, rather than specific implementations. It divides 
network operations into 7 steps, called layers, and arranges them hierarchically, 
in a protocol stack....

PBX 
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PBX
Private Branch Exchange: a customer-owned telephone switch that connects a 
company’s internal telephone network with the local telephone service 
provider’s central office.   Lucent’s DEFINITY PBX is a good example.
PDM
See processor data module (PDM).
PGATE
Packet gateway.
Point-to-Point Protocol
A TCP/IP implementation tailored for use over telephone lines. It supports 
router-to-router and...

protocol   Glossary
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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.
PSDN
Packet-switch public data network.
PSTN
See Public Switched Telephone Network (PSTN).
PSN
Packet-switched network.
Public Switched Telephone Network (PSTN) 
The worldwide voice telephone system. 
QQPPCN
Quality Protection Plan Change Notice.
QSIG
A...

routing plan 
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routing plan
Routing plans direct outgoing voice-interworking and interserver calls to the 
first available PRI trunk group in a list. This arrangement lets you allow for 
trunk groups that are busy, out of service, or out of bandwidth. Each routing 
plan is identified by a routing-plan number in the range 1-32.
RPN
Routing-plan number.
RTP
Real-time protocol.
SSocket
An address formed by...

Simple Network Management Protocol (SNMP)   Glossary
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Simple Network Management Protocol (SNMP)
An International Standards Organization (ISO) protocol that sets standards for 
communications between network components and network management 
stations. SNMP handles network resources using the information contained in a 
management information base (MIB), a virtual database resident on the various 
parts of the...

T-carrier 
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T- c a r r i e r
A hierarchy of digital voice- and data-transmission systems used in North 
America and based on multiples of the capacity of the T- 1 line.
tandem switch
A switch within an electronic tandem network (ETN) that provides the logic to 
determine the best route for a network call, possibly modifies the digits 
outpulsed, and allows or denies certain calls to certain users....

time slot   Glossary
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time slot
64 kbps of digital information structured as eight bits every 125 microseconds. 
In the switch, a time slot refers to either a DS0 on a T1 or E1 facility or a 
64-kbps unit on the TDM bus or fiber connection between port networks.
trunk
A communication line linking two switches (public-network, PBX, or 
MMCX-server).
trunk group
A collection of trunks that all terminate at the same...

virtual circuit (virtual connection) 
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virtual circuit (virtual connection)
The pre-arranged route through the AT M network that all cells in an ATM 
transmission follow.
virtual circuit number
The route identifier contained in an AT M cell header. A VCI and a VPI together 
constitute the virtual circuit number.
virtual path identifier
See VPI.
VPI
The AT M virtual path identifier. ATM is a...

ZCS   Glossary
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ZZCS
See Zero Code Suppression (ZCS).
Zero Code Suppression (ZCS)
ZCS line coding substitutes a 1 for the second least-significant bit of every 
all-zero byte in AMI-encoded data (see line coding). ZCS encoding has no 
effect on voice communications, but
 it corrupts digital data (see restricted 
facilities). In MMCX communications, ZCS corrupts the ISDN D-channel.