A
|
|
AAA
|
authentication, authorization, and accounting
|
AAL
|
ATM adaptation layer
|
AAL1
|
ATM adaption layer 1
|
AAL2
|
ATM adaption layer 2
|
AAL3/4
|
ATM adaption layer 3 and 4
|
AAL5
|
ATM adaption layer 5
|
ABM
|
Asynchronous Balanced Mode
|
AC
|
automatic callback
|
AC_ACT
|
Automatic callback activation
|
AC_DEACT
|
Automatic callback deactivation
|
ACL
|
automatic congestion level
|
ACR
|
Anonymous call rejection
|
ACR_ACT
|
ACR activation code
|
ACR_DEACT
|
ACR deactivation code
|
ADI
|
activation, deactivation and interrogation
|
ADM
|
Administration, Diagnostics, and Maintenance
|
AIN
|
Advanced Intelligent Network
|
Airlines
|
airlines information and reservation
|
AMA
|
Automated Message Accounting
|
ANI
|
automatic number identification
|
ANNC
|
announcement
|
Annex E
|
Connection Over UDP—Relates to sending signaling over UDP (User Data Protocol) for quicker call establishment. UDP does not replace TCP/IP. Annex E optimizes the gatekeeper-routed call model.
|
Annex F
|
Inter-Domain Communications—A domain is several zones grouped together. Inter-domain communications focuses on address resolution between domains.
|
ANS
|
announcement server
|
APP
|
application
|
AR
|
automatic recall
|
AR_ACT
|
Automatic recall activation
|
AR_DEACT
|
Automatic recall deactivation
|
ASPC
|
analog stored program control switch
|
AT
|
access tandem
|
ATM
|
Asynchronous Transfer Mode
|
AUEP
|
Audit Endpoint
|
B
|
|
B Channel
|
bearer channel
|
BAF
|
Bellcore AMA Format
|
BCID
|
billing correlation identifier
|
BCM
|
Basic Call Module
|
BDMS
|
Bulk Data Management System of the Cisco BTS 10200 Softswitch.
|
BE
|
best effort
|
BEC
|
Backward Error Correction
|
Bit
|
binary digit
|
Block-DA
|
Block Directory Assistance.
|
Block-INTL
|
Block International Operator Assistance
|
Block-TW
|
Block Time and Weather
|
BLV
|
Busy Line Verification
|
BOC
|
Bell Operating Company
|
BRI
|
Basic Rate Interface
|
BTS
|
Broadband Telephony Services
|
C
|
|
CA
|
Call Agent. Component of the Cisco BTS 10200 Softswitch.
|
CA-Config
|
Call Agent configuration
|
CALEA
|
Communications Assistance for Law Enforcement Act
|
CALLp
|
call processing
|
CAP
|
competitive access provider
|
CAS
|
channel-associated signaling
|
CAS-TG
|
channel-associated signaling trunk group
|
CAT
|
customer access treatment
|
CBLK
|
Call block—reject caller
|
CBR
|
constant bit rate
|
CC
|
country code or courtesy call
|
CCC
|
call content channel
|
CCM
|
Cisco CallManager
|
CC-NN
|
country code—national number
|
CCR
|
continuity check request message
|
CCSS7
|
Common Channel Signaling System 7
|
CCT
|
circuit
|
CCW
|
Cancel call waiting
|
CDB
|
call detail block
|
CDC
|
call data channel
|
CDP
|
Customize dial plan
|
CDR
|
call detail record
|
Centrex
|
Central Office Exchange
|
CFB
|
call forwarding busy
|
CFBI
|
Call forwarding busy interrogation
|
CFBVA
|
Call forwarding busy activation
|
CFBVD
|
Call forwarding busy deactivation
|
CFC
|
Call forwarding combination
|
CFC_ACT
|
Call forwarding combination activation
|
CFC_DEACT
|
Call forwarding combination deactivation
|
CFC_DN_CHG_ACT
|
Call forwarding combination DN change with activation
|
CFCI
|
CFC interrogation with DN verification
|
CFCI_NO_DN_VRFY
|
CFC interrogation with no DN verification
|
CFN
|
confusion message
|
CFNA
|
call forwarding no answer
|
CFNA
|
Call forwarding no answer
|
CFNAI
|
CFNA variable interrogation
|
CFNAVA
|
CFNA variable activation
|
CFNAVD
|
CFNA variable deactivation
|
CFU
|
call forwarding unconditional
|
CFUA
|
CFU activation
|
CFUD
|
CFU deactivation
|
CFUI
|
CFU interrogation
|
CFVABBG
|
Call forwarding variable activation for business groups
|
CHD
|
Call hold
|
CIC
|
Circuit Identification Code
|
CIC
|
Carrier Identification Code. A unique 3- or 4-digit access identification code assigned by Telcordia (formerly Bellcore). It identifies the long-distance carrier of a caller.
|
CIDCW
|
call identity with call waiting
|
CIDCW
|
Caller ID with call waiting
|
CIDS
|
Calling identity delivery and suppression per call
|
CIDSD
|
Calling identity delivery and suppression, delivery part per call
|
CIDSS
|
Calling identity delivery and suppression, suppression part per call
|
CIP
|
carrier information parameter
|
Cisco BTS 10200
|
Cisco System's Broadband Telephony Services Softswitch 10200
|
CLEC
|
competitive local exchange carrier
|
CLH
|
circular line hunt
|
CLI
|
command-line interface
|
CLIP
|
calling line information presentation
|
CLIP
|
Calling line identity presentation
|
CLIR
|
calling line information restriction
|
CLIR
|
Calling line identity restriction
|
CLLI
|
Common Language Location Identifier. An 11-character descriptor field assigned to a class 4/5 switch.
|
CM
|
cable modem
|
CMS
|
call management system
|
CMTS
|
Cable Modem Termination System
|
CNAB
|
calling name delivery blocking
|
CNAB
|
Calling name delivery blocking
|
CNAM
|
Calling name
|
CND
|
Calling number delivery
|
CNDB
|
calling number delivery blocking
|
CNM
|
Connection Manager
|
CO
|
Central Office
|
CONFIG
|
configuration
|
COPS
|
Common Open Policy Service
|
COS
|
Class of service screening
|
COT
|
continuity test
|
COT
|
Customer-originated trace
|
CPL
|
Command Privilege Level
|
CPOL
|
Cisco Patent On-line
|
CPRK
|
Call park access code
|
CPRK_RET
|
Call park retrieval access code
|
CPSG-ID
|
call park subscriber group identification
|
CPU
|
central processing unit
|
CRA
|
circuit reservation acknowledgement
|
CRCX
|
MGCP create connection message type
|
CRG
|
charge information (message)
|
CRM
|
circuit reservation message
|
CRMCRA
|
circuit reservation message/circuit reservation acknowledgment
|
CT
|
call transfer
|
CVR
|
circuit validation response
|
CVT
|
circuit validation test
|
CW
|
call waiting
|
CWD
|
call waiting deluxe
|
D
|
|
D Channel
|
data channel
|
DA
|
directory assistance
|
DACWI
|
distinctive alerting/call waiting on incoming on DID calls
|
DA-CWI
|
distinctive alerting/call waiting on incoming
|
DA-Toll
|
1+411, 1+NPA-555-1212 calls.
|
DChan-Port
|
D-Channel Port Number
|
DChan-Slot
|
D-Channel Slot
|
DHCP
|
Dynamic Host Control Protocol
|
DID
|
direct inward dialing
|
DID/DNIS
|
direct inward dialing/Dialed Number Identification Service
|
DLCX
|
MGCP delete connection message type
|
DN
|
directory number
|
DND
|
do not disturb
|
DND_ACT
|
do not disturb activation
|
DND_DEACT
|
do not disturb deactivation
|
DNIS Pattern
|
Dialed Number ID Service
|
DNS
|
Domain Name Server
|
DOCSIS
|
Data Over Cable System Interface Specification
|
DOW
|
day of week
|
DOY
|
date of year
|
DP
|
detection point
|
DPC
|
destination point code
|
DPN
|
directed call pickup with barge-in
|
DPU
|
directed call pickup
|
DQOS
|
dynamic quality of service
|
DRCW
|
distinctive ringing call waiting
|
DRCW_ACT
|
DRCW activation code
|
DSCP
|
DiffServ Code Point
|
DSPC
|
Digital Stored Program Control Switch
|
DTMF
|
dual tone multifrequency. Tones that are generated when a button on a touch-tone phone is pressed. When the tone is generated, it is compressed, transported to the other party, and decompressed.
|
DTMF-Groundstart
|
dual tone multifrequency Ground Start
|
DTMF-IMStart
|
dual tone multifrequency Immediate Start
|
DTMF-Loopstart
|
dual tone multifrequency Loop Start
|
DTMF-Winkstart
|
dual tone multifrequency Wink Start
|
DUP-Records
|
duplicate records
|
E
|
|
E Channel
|
echo channel
|
E&M
|
recEive and transMit
|
EM
|
event message
|
E.164
|
The ITU-T international public telecommunications numbering plan standard
|
EAEA
|
Equal Access Exchange Area
|
EAEO
|
Equal Access End Office
|
EAIN
|
Bellcore FGD Exchange Access International Signaling
|
EANA
|
Bellcore FGD Exchange Access North American Signaling
|
EC
|
echo cancellation
|
ECD
|
Echo Control Device (normally an echo suppressor or echo canceller)
|
E-ISUP
|
extended-ISUP
|
EM
|
Event Message or Messaging
|
EMA
|
Event Message Adapter
|
EMG
|
Emergency (911) Call
|
EMS
|
Element Management System
|
EMTA
|
Embedded Media Terminal Adapter
|
ENUM
|
Electronic Number Mapping
|
EO
|
end office
|
ESA
|
Electronic Surveillance Adapter
|
EXM
|
exit message
|
EXT
|
extension
|
F
|
|
FAIL-CNT
|
failure count
|
FCLI
|
Functional Command Line Interface
|
FCP
|
Feature Control Protocol
|
FDT
|
final dial tone
|
FEID
|
Financial Entity Identifier
|
FGD
|
Feature Group D
|
FIM
|
feature interaction manager
|
FName
|
feature name
|
FQDN
|
Fully Qualified Domain Name
|
FS
|
Feature Server in the Cisco BTS 10200 Softswitch
|
FSAIN
|
AIN Feature Server
|
SFPTC
|
POTS, Tandem, Centrex Feature Server
|
FTP
|
File Transfer Protocol
|
G
|
|
G
|
guaranteed
|
GAP
|
generic address parameter
|
GC
|
gate controller
|
GK
|
gatekeeper—A device that does E.164 to IP address resolution, bandwidth management and load balancing.
|
GN
|
generic name
|
GN
|
gateway number (Hong Kong)
|
GPRS
|
general packet radio service
|
GRE
|
generic routing encapsulation
|
GSC1D
|
1-digit group speed calling
|
GSC2D
|
2-digit group speed calling
|
GTD
|
Generic Transport Descriptor—ASCII based encoding scheme used to pass signaling information end-to-end.
|
GTP
|
GPRS tunneling protocol
|
GW
|
gateway
|
H
|
|
H.225
|
The call signaling protocol of H.323. H.225 uses messages similar to messages defined in Q.931 ITU-T Recommendation.
|
H.245
|
The resource exchange protocol of H.323. H.245 is used to help the two peers determine the master-slave relationship, the exchange of capabilities, and the opening or closing of logical channels.
|
H.323
|
ITU-T recommendation adopted by the VoIP Forum as the call signaling protocol over a LAN
|
H3A
|
The H.323 signaling adapter subsystem of the Cisco BTS 10200 Softswitch
|
HFC
|
hybrid fiber coaxial
|
HMAC
|
hash-based message authentication code
|
HMAC-MD5
|
hashed message authentication code with MD5 (RFC 2104)
|
HMN
|
hardware monitor
|
HOTLINE
|
hotline
|
HOTV
|
hotline variable
|
HOTVA
|
hotline variable activation
|
HOTVD
|
hotline variable deactivation
|
HOTVI
|
hotline variable interrogation
|
HPTime
|
higher packetization time
|
I
|
|
IAD
|
integrated access device
|
IC
|
Interexchange Carrier
|
ICMP
|
Internet Control Message Protocol
|
IDEA
|
International Data Encryption Algorithm
|
IETF
|
Internet Engineering Task Force
|
IKE
|
Internet Key Exchange
|
ILEC
|
Incumbent local exchange carrier
|
IMAP
|
Internet Message Access Protocol
|
INAP
|
Intelligent Network Application Part
|
INFO
|
Information services calls
|
INS
|
In-Service
|
ISFG
|
incoming SFG for Centrex
|
INTERLATA
|
Calls that cross LATA boundaries
|
INTL
|
international
|
INTL-OPR
|
international operator
|
INTRALATA
|
Calls that occur within a single LATA
|
IP
|
Internet Protocol
|
IPsec
|
IP Security standard from IETF.
|
ISDN
|
Integrated Services Digital Network
|
ISUP
|
ISDN User Part
|
ITP
|
IP transfer point
|
ITP
|
intraLATA toll presubscription
|
ITU-T
|
International Telecommunication Union - Telecommunication Sector
|
IVR
|
Interactive Voice Response
|
IXC
|
Interexchange Carrier
|
J
|
|
JIP
|
jurisdiction information parameter
|
K
|
|
KDC
|
Kerberos Domain Controller
|
L
|
|
LATA
|
local access transport area
|
LB-TEST
|
loopback test call (108 test line)
|
LCADS
|
Local Calling Area Data Source
|
LCD
|
limited call duration
|
LCR
|
least cost routing
|
LDAP
|
Lightweight Directory Access Protocol
|
LEC
|
local exchange carrier
|
LERG
|
Local Exchange Routing Guide
|
LIDB
|
line information database
|
LNP
|
local number portability
|
LNP
|
local number portability
|
LOCAL
|
local call
|
LOCK-OUT
|
lockout
|
LPTime
|
lower packetization time
|
LRN
|
local routing number
|
LSA
|
local service area
|
M
|
|
MAC
|
media access control
|
MAX-Digits
|
maximum number of digits
|
MCF
|
multiple call forwarding
|
MD5
|
message digest 5
|
MDCX
|
MGCP modify connection message type
|
MDL
|
Message Definition Language
|
MDN
|
multiple directory numbers
|
MDO
|
message definition object
|
MF-IMStart
|
multifrequency Immediate Start
|
MF-Winkstart
|
multifrequency Wink Start
|
MIB
|
Management Information Base
|
MG/MGW
|
media gateway
|
MGA
|
media gateway adapter
|
MGC
|
MGCP Media Gateway Controller
|
MGCP
|
Media Gateway Control Protocol, used by the Cisco BTS 10200 Softswitch for controlling the bearer path on the media gateway
|
MGW
|
Media Gateway. The main functionality of MGW is to packetize voice PCM stream from IMT in to RTP stream and vice-versa. The Call Agent controls MGWs using MGCP commands.
|
MIN-Digits
|
minimum number of digits
|
MLHG
|
Multiline hunt group
|
MSN
|
Microsoft Network
|
MTA
|
Media Terminal Adapter
|
Mu-law
|
PCM voice-coding and compounding standard
|
MWI-On
|
Message Waiting Indicator On
|
N
|
|
NANP
|
North American Numbering Plan
|
NANPA
|
North American Numbering Plan Administration
|
NAS
|
network access server
|
NCA
|
no circuit available
|
NCS
|
network-based call signaling
|
NEW-DN
|
new subscriber directory number
|
NFAS
|
nonfacility associated signaling
|
NLB
|
network loopback
|
NMS
|
network management system
|
NOA
|
nature of address
|
NOD
|
nature of dial
|
NON-EMG
|
non emergency calls; 311 calls
|
Noun
|
The name of a table in the BTS 10200 database
|
NPA
|
Numbering Plan Area (area code)
|
NRUF
|
Numbering Resource Utilization and Forecast
|
NSA
|
no solicitation announcement
|
NSA_ACT
|
NSA management
|
NTE
|
named telephony event. An event such as DTMF digits that must be encoded and transported in an RTP packet. RFC 2833 specifies the format of the RTP NTE payload.
|
NTF
|
no trouble found
|
NTP
|
Network Time Protocol
|
NXX
|
Office Code or Prefix with a first digit of 2-9
|
O
|
|
O-
|
Originating- such as CMS and MGC
|
OAMP
|
operations, administration, maintenance provisioning
|
OCB
|
outgoing call barring
|
OCB_ACT
|
outgoing call barring activation
|
OCB_ADI
|
outgoing call barring—activation, deactivation and interrogation. See OCB and ADI.
|
OCB_DEACT
|
outgoing call barring deactivation
|
OCB_INT
|
outgoing call barring interrogation
|
OCBA
|
Outgoing call barring activation
|
OCBD
|
Outgoing call barring deactivation
|
OCBI
|
Outgoing call barring interrogation
|
OCLLI
|
CLLI of the originating trunk group
|
OCN
|
Original Called Number Information Element
|
OLD-DN
|
Old Subscriber Directory Number
|
OLI
|
Originating Line Information
|
OOB
|
out of band
|
OOS
|
out of service
|
OPC
|
originating or origination point code
|
OPER-Status
|
Operational Status
|
OSFG
|
Outgoing SFG feature for Centrex
|
OSI
|
open switch interval or open system interconnection
|
OSS
|
Operations Support System
|
OSSS
|
operator services signaling system
|
P
|
|
P1
|
Priority Level 1
|
P2
|
Priority Level 2
|
P3
|
Priority Level 3
|
P4
|
Priority Level 4
|
PHB
|
per-hop behavior
|
PBX
|
private branch exchange
|
PCM
|
pulse code modulation
|
PCS
|
personal communications service
|
PDP
|
Policy Decision Point
|
PEP
|
Policy Enforcement Point
|
PIC
|
preferred interLATA carrier or point in call
|
PIN
|
private identification number
|
PIN-LEN
|
pin length
|
PKT
|
packet
|
PKT-CBL
|
PacketCable
|
POP
|
point of presence
|
POTS
|
plain old telephone service
|
PRD
|
Product Requirement Document
|
PREMIUM
|
service access code 900, use carrier to route the call
|
PS
|
privacy screening
|
PS_MANAGE
|
privacy screening management
|
PS_O
|
privacy screening assigned to the incoming trunk from the PS application server
|
PSTN
|
public switched telephone network.
|
PTC
|
Plain Old Telephone Service (POTS), Tandem, Centrex
|
PVC
|
permanent virtual circuit
|
Q
|
|
Q.931
|
Call-signaling protocol for setup and termination of calls
|
Q.Sig
|
Q signaling—a PBX signaling protocol
|
QAM
|
Queuing and Audit Manager
|
QoS
|
quality of service
|
QVT
|
query verification tool
|
R
|
|
RAC
|
Resource Availability Confirmation message
|
RACF
|
remote activation of call forwarding
|
RACF_PIN
|
RACF PIN change
|
RADIUS
|
Remote Authentication Dial-In User Service
|
RAI
|
Resource Availability Indication RAS message
|
RAS
|
Registration, Admission, and Status Protocol. RAS is defined in the H.225 ITU-T Recommendation. RAS is used to communicate between gateways, endpoints and gatekeeper. RAS is also used to communicate between two gatekeepers.
|
RBOC
|
Regional Bell Operating Company
|
RCF
|
Remote call forwarding
|
RCF
|
Registration Confirmation message
|
RDN
|
Redirecting Number Information Element
|
REFER
|
refer capability
|
RFC
|
Request for comments document series
|
RGW
|
residential gateway
|
RIP
|
Request In Progress message
|
RKS
|
Record Keeping Server; Record Keeping System
|
ROH
|
receiver off hook
|
ROTL
|
remote office test line
|
RR
|
ring reminder
|
RRJ
|
Registration Reject message
|
RRQ
|
Registration Request message
|
RSIP
|
Restart In Progress
|
RSUP
|
Reliable SAP Update Protocol
|
RSVP
|
Resource Reservation Protocol. An IETF protocol for providing integrated services and reserving resources in an IP-based internet.
|
RTP
|
Real-time Transport Protocol—A protocol for transporting multimedia over IP; see RFC 1889, RTP: A Transport Protocol for Real-Time Applications.
|
RUDP
|
Reliable User Data Protocol (UDP) Protocol.
|
S
|
|
S7A
|
SS7 ISUP signaling adapter
|
SAP
|
Session Announcement Protocol
|
SC1D
|
1-digit speed calling
|
SC1D_ACT
|
1-digit speed calling activation code
|
SC2D
|
2-digit speed calling
|
SC2D_ACT
|
2-digit speed calling activation code
|
SCA
|
Selective call acceptance
|
SCA_ACT
|
SCA activation code ACA_ACT provides access to an IVR server for activation, screening list setup and editing, and deactivation of SCA
|
SCCP
|
Signal Connection Control Part
|
SCF
|
Selective call forwarding
|
SCF_ACT
|
Selective call forwarding activation
|
SCP
|
Service Control Point
|
SCR
|
Selective call rejection
|
SCR_ACT
|
Selective call rejection activation SCR_ACT provides access to an IVR server for the activation, screening list setup and editing, and deactivation of SCR
|
SCTP
|
Stream Control Transmission Protocol
|
SDP
|
Session Description Protocol. A protocol for defining information needed to establish multimedia transport over IP. SDP transmits information such as session announcement, session invitation, transport addresses, and media types. For example, in a SIP call, SDP messages indicates if NTE is used, which events to send using NTE, and the NTE payload type value. See RFC 2327, SDP: Session Description Protocol.
|
SDT
|
second dial tone
|
Send-ATP
|
Send Access Transport Parameter
|
Send-CIP
|
Send Carrier Information Parameter
|
Send-CN
|
Send Charge Number
|
Send-CPN
|
Send Calling Party Number
|
Send-CSP
|
Send Carrier Selection Parameter
|
Send-GAP
|
Send Generic Address Parameter
|
Send-GN
|
Send Generic Name
|
Send-OCN
|
Send Original Called Number
|
SFD
|
Subscriber-Feature-Data. A record stored on a per-subscriber/per-feature basis in the Cisco BTS 10200 Softswitch.
|
SFG
|
simulated facility group
|
SG4.0
|
Signaling Gateway 4.0 Release
|
SGCP
|
Simple Gateway Control Protocol
|
SHA
|
secure hash algorithm
|
SI
|
service indicator
|
SIM
|
Service Interaction Module
|
SIP
|
Session Initiation Protocol. A protocol for transporting multimedia that is independent of the underlying packet control layer, such as the User Datagram Protocol (UDP), and is based on client/server architecture. See RFC 2543, SIP: Session Initiation Protocol.
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SK
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Service Key
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SMG
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Session Manager
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SNMP
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Simple Network Management Protocol
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SPCS
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stored program control switch
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SPVC
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soft permanent virtual circuit
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SQL
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Structured Query Language
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SS7
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Signaling System 7
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SSF
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service switching function
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SSH
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secure shell
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SSN
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subsystem number
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SSP
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service switching point
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ST
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Signaling Transport
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SVC
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switched virtual circuits
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T
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T-
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Terminating- such as CMS and MGC
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Table
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A database entity containing customer-provisioned data
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TAC
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Technical Assistance Center
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TCAP
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Transaction Capabilities Application Part
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TCCLI
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CLLI of the terminating trunk group
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TCL
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Tool command language
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TCP
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Transmission Control Protocol
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TCP/IP
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Transmission Control Protocol/Internet Protocol
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TDP
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Trigger Detection Point
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Technology Prefix
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A number used in the gateway and gatekeeper RAS communication to indicate to the gatekeeper the type of service this gateway is capable of handling. Examples of the type of service are voice mail, fax server, and so forth.
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TFC
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Transfer Controlled
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TG
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trunk group
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TGCP
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Trunking Gateway Control Protocol
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TGW
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trunking gateway (SS7/PSTN)
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TID
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trigger ID
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TMN
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Telecommunication Management Network
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TNS
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Transit Network Selection
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TO
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timeout
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TOD
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time of day
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TOS
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type of service
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Translated DN
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translated directory number
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TRS
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Telecommunications Relay Services
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TS
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tandem switch
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TSA
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TCAP Signaling Adapter
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TSAP
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Transport Service Access Point
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T-Stamp
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time stamp
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TType
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trigger type
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TUP
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Telephone User Part
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TUT
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trunk under test
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TVT
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translation verification tool
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TW
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time and weather
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TWC
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three-way call
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TWCD
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three-way calling deluxe
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U
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UAC
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user agent client
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UAN
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universal access number
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UBR
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unspecified bit rate
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UCD
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Uniform Call Distribution
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UDP
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User Datagram Protocol
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UPA
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user part available
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UPU
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user part unavailable
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Update-ANI
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Update Automatic Number Identification
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UPL
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user privilege level
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URL
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uniform resource locator
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V
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VACANT
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vacant code
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VBR
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variable bit rate
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VISM
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Voice Interworking Service Module
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VM
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voice mail
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VM_ACCESS
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voice mail access
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VM_ACT
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voice mail activation feature
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VM_DEACT
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voice mail deactivation feature
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VMA
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voice mail always
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VMA_ACT (
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voice mail always activation feature
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VMA_DEACT
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voice mail always deactivation feature
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VoIP
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Voice over IP. The ability to carry normal telephony-style voice over an IP-based internet with POTS-like functionality, reliability, and voice quality. VoIP is a blanket term which generally refers to Cisco's standards-based (for example, H.323) approach to IP voice traffic.
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VoP
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Voice over packet
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