Glossary

Revised: August 10, 2011, OL-25016-01

A
 
AAA
authentication, authorization, and accounting
ACAR
automatic callback and automatic rollback
ACF
admission confirmation
ACG
automatic call gapping
ACK
acknowledge
ACL
access control list, automatic congestion level
ACTV
active
ADDR
address
ADM
administrative
AGGR
aggregation
AIN
Advanced Intelligent Network
ALT
alternate
ANC
announcements module
ANI
automatic number identification
ANSI
American National Standards Institute
AOR
address of record
API
application programming interface
ARQ
admission request
AS
application server
ASC
associate
ASP
application service provider
ATIS
Alliance for Telecommunications Industry Solutions
AUCX
audit connection
AUEP
audit endpoint

B
 
B8ZS
binary 8-zero substitution
BCM
Basic Call module
BDMS
Bulk Data Management System
BHCA
Busy Hour Call Attempts
BLG
billing
BLO
blocking
BTS
Broadband Telephony Softswitch
BW
bandwidth

C
 
CA
Call Agent
CA
California
CALLP
call processing
CAROT
Centralized Automatic Reporting on Trunks
CAS
channel-associated signaling
CCB
call control block
CCR
continuity check request
CCU
Call Control unit
CD
compact disk
CDB
call data block
CD-ROM
compact disk-read only memory
CDT
Central Daylight Time
CFG
configuration
CFN
confusion
CGB
circuit group blocking
CGU
circuit group unblocking
CIC
circuit identification code, carrier identification code
CLI
command line interface
CLLI
common language location identifier
CMJ
circuit reservation rejected
CMTS
cable modem termination system
CNAM
calling name delivery
CODEC
coder/decoder, compression/decompression
COPS
Common Open Policy Service Protocol
CORBA
Common Object Request Broker Architecture
COT
customer-originated trace, continuity testing, central office termination
CPE
customer premises equipment
CPU
central processing unit
CQM
circuit query message
CQR
circuit query response
CRC
cyclic redundancy check
CRCX
create connection
CS
capability set (for example, CS-2)
CST
Central Standard Time
CTRL
control
CTX
Centrex
CVM
circuit verification message
CVR
circuit verification response
CVT
circuit validation test

D
 
DB
database
DBA
database administrator
DBM
database management
DF
delivery function
DHCP
Dynamic Host Configuration Protocol
DLCX
delete connection
DLY
delay
DN
directory number
DNIS
dialed number identification service
DNS
domain name system
DPC
destination point code
DSCP
differentiated service code point
DUPU
destination user part unavailable

E
 
EA
equal access
EGA
event generator
EM
Element Manager
EM
event message
EMEA
Europe, Middle East, and Asia
EMS
Element Management System
EP
endpoint
EPCF
endpoint connection
ER
easily recognizable
ESA
enhanced subscriber authentication
ESF
extended super frame

F
 
FAS
facility associated signaling
FCAPS
Fault, Configuration, Accounting, Performance, and Security
FPGA
field programmable gate array
FQDN
fully qualified domain name
FS
Feature Server
FSAIN
Feature Server for AIN services
FSPTC
Feature Server for POTS, Tandem, and Centrex services
FTP
File Transfer Protocol
FXS
Foreign Exchange Station

G
 
GAP
generic address parameter
GB
gigabits
GCF
gatekeeper confirmation
GK
gatekeeper
GMT
Greenwich Mean Time
GRA
group reset acknowledge
GRJ
gatekeeper reject
GRP
group
GRQ
gatekeeper request
GRS
group reset
GTD
generic transport descriptor
GTT
global title translation
GUI
Graphical User Interface
GW
gateway

H
 
H323
H.323 Protocol
H323GW
H323 gateway
H3A
H.323 signaling adapter
HB
heartbeat
HSS
Home Subscriber Server

I
 
IAD
integrated access device
IAM
initial address message
ICMP
Internet Control Message Protocol
ID
identification
IDX
index
IE
information element
IETF
Internet Engineering Task Force
IN
intelligent network
INF
information
INIT
initialize
INR
information request
INS
in service
IOS
Integrated Operating System
IP
Internet Protocol
IPC
inter-process communication
IPM
Internet Protocol Manager
IPsec
Internet Protocol security
ISDN
Integrated Services Digital Network
ISP
Internet service provider
ISUP
ISDN user part
ITL
Incoming Test Line (same as TTL)
ITP
IP transfer point
IVR
interactive voice response
IXC
interexchange carrier

J
 
JMS
Java message service

K
 
KAM
keepalive module
kb
kilobit
KMS
Kerberized management server

L
 
LAF
log archive facility
LATA
local access and transport area
LBLK
locally blocked
LIDB
line information database
LNP
local number portability
LPA
loop prevention acknowledgement
LRN
local routing number
LSA
local serving area

M
 
M3UA
MTP3 user adapter
Mb
megabit
MDCX
modify connection
MDL
message definition language
MGA
media gateway adapter
MGCP
Media Gateway Control Protocol
MGW
media gateway
MIB
Management Information Base
MIM
M3UA Interface Module
MRMW
multiple readers and multiple writers
ms
millisecond
MTA
media terminal adapter, Metropolitan Trading Area
MTP
message transfer part
MTP1
message transfer part 1
MTP2
message transfer part 2
MTP3
message transfer part 3
MTU
maximum transmission unit

N
 
NANP
North American Numbering Plan
NAS
network access server
NCS
network-based call signaling
NFAS
not facility associated signaling
NFS
network file server
NGN
Next Generation Networks
NIIF
Network Interconnection Interoperability Forum
NML
Network Management Layer
NMS
network management system
NNN
numeric number nomenclature
NOA
nature of address
NPA
Numbering Plan Area
NPAC
Number Portability Administration Center
NR
nonrecoverable
NTP
Network Time Protocol
NU
network unit
NUM
number
NW
network

O
 
OAMP
operations, administration, maintenance, and provisioning
OLI
originating line information
OMNI
Ulticom SS7 stack
OMS
OptiCall Messaging System
OPC
originating point code
OPT
Open Packet Telephony
ORA
Oracle
OS
operating system
OSS
operations support system
OTL
Originating Test Line

P
 
PBX
private branch exchange
PDM
process debug manager
PDU
protocol decode unit
PIC
presubscribed interexchange carrier, point in call
PID
process ID
PMG
process manager
POP
point of presence
POTS
plain old telephone service
PRI
primary rate interface
PSTN
public switched telephone network

Q
 
QAM
queue processing module
QoS
quality of service
QVT
Query Verification Tool

R
 
RAM
random access memory
RAS
Registration, Admissions, and Status
RBLK
remote block
REL
release
RFC
request for comment
RGW
residential gateway
RKEY
routing key
RKS
record keeping system
RLC
release complete
RMAN
recovery manager
ROM
read only memory
ROTL
Remote Office Test Line
RPF
registration and profiling tool
RQNT
request for notification
RQNT
notification request
RR
resource record
RRJ
request rejected
RRQ
registration request
RSC
reset circuit
RSIP
restart in progress
RT
retransact
RTM
routing module
RTO
retransmission time out
RTP
Real Time Transport Protocol
RUDP
Reliable User Datagram Protocol
RX
retransmit

S
 
S1
severity 1
S2
severity 2
S3
severity 3
S4
severity 4
S7A
SS7 adapter
S7M
SS7 module
SA
security association
SAI
signaling adapter interface
SAP
service access point
SCA
selective call acceptance, status control adapter
SCC
signaling connection control
SCCP
signaling connection control part
SCCS
Switched Control Center System
SCP
service control point, signal control point
SCTP
Stream Control Transmission Protocol
SDH
Synchronous Digital Hierarchy
SDN
software defined network
SFTP
Secure File Transfer Protocol
SG
signaling gateway
SGP
signaling gateway process
SHR
System Health Report (system-health)
SIA
SIP adapter
SID
system identification number
SIP
Session Initiation Protocol
SLC
signaling link code
SLHR
Service Logic Host Route
SM
system manager
SMG
system manager program
SMS
service management system
SNMP
Simple Network Management Protocol
SONET
Synchronous Optical Network
SP
service provider
SQL
Structured Query Language
SRV
service
SS7
Signaling System 7
SSH
secure shell
SSN
subsystem number
SSP
signal switching point
STP
signal transfer point
SUA
SCCP user adapter
SUB
subscriber

T
 
T1
trunk level 1
T3
trunk level 3
T5
timer 5
T13
timer 13
T15
timer 15
T17
timer 17
T19
timer 19
T21
timer 21
T23
timer 23
T28
timer 28
T CCR
timer continuity check request
TAC
Technical Assistance Center
TCAP
Transaction Capabilities Application Part
TCP
Transmission Control Protocol
TDM
telecommunications data link monitor
TEI
terminal endpoint identifier
TERMID
Termination Identification
TFC
transfer controlled
TG
trunk group, trunking gateway
TGID or TGN-ID
trunk group ID
TIA
Telecommunications Industry Association
TMM
Traffic and Measurements module
TMN
Telecommunications Management Network (ITU-T)
TOS
type of service
TPM
terminating point master
TRNS
transient
TSA
TCAP signaling adapter
TSAP
transport service access point
TT
translation type
TTL
Terminating Test Line
TVT
Translation Verification Tool

U
 
UBL
unblocking message
UDP
User Datagram Protocol
UEQP
unequipped
ULP
Upper Layer Protocol
URI
uniform resource identifier
URL
universal resource locator
US
United States
USA
United States of America

V
 
VOA
Voice Over ATM
VOIP
voice over IP
VOP
Voice Over Packet
VTOC
volume table of contents

W
 

X
 
XUA
extended unit association
XUDTS
extended unit data service

Y
 

Z