Download Glossary - William George Mitchell

Glossary
10Base-T 10 Mbps Ethernet over twisted pair copper cable
100Base-T 100 Mbps Ethernet over twisted pair copper cable
1000Base-T 1000 Mbps Ethernet over twisted pair copper cable
10GBase-T Proposed 10Gbps over copper cable
4e Class 4 switch from Alcatel/Lucent
5e Class 5 switch Alcatel/Lucent
ACD Automatic Call Distribution
ADPCM Adaptive Differential Pulse Code Modulation
AMIS Audio Messaging Interchange Specification
ANI Automatic Number Identification
ARPA Advanced Research Projects Agency
ASIC Application Specific Integrated Circuit
BRI Basic Rate Interface (2B +D)
DECT Digital Ehnanced Cordless Telecommunications
DiffServ Differentiated Services
DNS Domain Naming System
DSCP Differentiated Services Code Point
DSP Digital Signal Processor
CAT 5e Category 5e twisted pair cable
CDMA Code Division Multiple Access
CDR Call Detail Record
CERT Computer Emergency Readiness Team
CIF Common Intermediate Format
CLI Calling Line ID
CO Central Office of a telecommunications operator
Codec Coder/DeCoder
CRM Customer Relationship Management
CSMA/CD Carrier Sense Multiple Access/Collision Detection
CSU Channel Service Unit
CTI Computer Telephony Integration
D4 A T-1 framing scheme
DES Data Encryption Standard
DHCP Dynamic Host Configuration Protocol
DMS CO Switches from Nortel Networks
DMZ De-Militarised Zone
DOS Denial of Service
DS-0 64 Kbps channel
DS-1 1.544 Mbps = T-1 = 24 x 64 Kbps channels
DS-3 44.736 Mbps = T-3 = 28 x T-1s = 672 x 64 Kbps channels
DSS/BLF Direct Station Select Busy Lamp Field (Attendant Console)
DTMF Dual Tone Multi Frequency
E-1 = 32 x 64kbps
E.164 The international public telecommunications numbering plan
ECTF Enterprise Computer Telephony Forum
ESF Extended Super Frame – a T-1 framing scheme
FMC Fixed Mobile Convergence
FXO Foreign Exchange Office
FXS Foreign Exchange Station
G.711 Pulse code modulation (PCM) of voice frequencies
G.723.1 Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s
G.729a Coding of speech at 8 Kbps using Conjugate-Structure Algebraic-Code- Excited Linear-Prediction (CS-ACELP)
G.729a (annexe B) G.729a with silence suppression
Ground Start A way of signaling initiation of a call from a PBX to the CO by briefly grounding one side of a line
GSM Group System Mobile
H.100 ECTFs standard CT bus implementation with PCI
H.110 ECTFs standard CT bus implementation with Compact PCI
H.225.0 Call signaling protocols and media stream packetization for packet based multimedia communication
systems
H.245 Control protocol for multimedia communication
H.248 ITU equivalent of IETF MEGACO
H.263 Video Coding Standard
H.264 Advanced Video Coding Standard
H.320 Narrow-band visual telephone systems and terminal equipment
H.323 Packet-based multimedia communications systems
H.324m Video Conferencing standard for low bit-rate (mobile) connections
H.450 Generic functional protocol for the support of supplementary services
HTTP HyperText Transfer Protocol
ICE Interactive Connectivity Establishment (Assists with NAT traversal)
IEEE 802.1 Transparent Bridging
IEEE 802.1d Spanning Tree Algorithm
IEEE 802.3 CSMA/CD (Ethernet)
IEEE 802.3ad Link Aggregation
IEEE 802.3ae 10 Gbps Ethernet
IEEE 802.3af Power over Ethernet
IEEE 802.11 a,b,g,n Wireless LAN standards
IEEE 802.11e QoS for WiFi
IEEE 802.16e Mobile Wimax standard
IDS Intrusion Detection System
IM Instant Messaging
IP Internet Protocol
IPS Intrusion Protection System
IPSEC IP Security
IPT IP Telephony
ISDN Integrated Services Digital Network
ITU International Telecommunications Union
IVR Interactive Voice Recognition
LCD Liquid Crystal Display
LDAP Lightweight Directory Access Protocol
LED Light Emitting Diode
Loop Start A way of signaling call initiation by creating a loop across the two wires of a telephone pair.
MAC Media Access Control (Ethernet)
MAC Moves Adds and Changes (Telephony)
MGCP Media Gateway Control Protocol
MEGACO Media Gateway Control, also known as H.248 signaling protocol
MOS Mean Opinion Score
MPEG Motion Picture Experts Group
MPEG-4 Advanced Video Coding Standard
MPLS Multi-Protocol Label Switching
NAC Network Access Control
NAP Network Access Protection
NAT Network Address Translation
NI2 Standard ISDN Signaling scheme
OC-1 51.840 Mbps
OC-3 155 Mbps
OC-12 622 Mbps
OC-48 2.4 Gbps
OUI Organizationally Unique Identifier
P.831 Subjective performance evaluation of network echo cancellers
PABX Private Automatic Branch Exchange
PBX Private Branch Exchange
PCM Pulse Code Modulation
PRI Primary Rate Interface
Q.931 ISDN user-network interface layer 3 specification for basic call control
QSig Q reference point Signaling
RED Random Early Detection
RSVP-TE Resource Reservation Protocol – Traffic Engineering
RTP Real-Time Transport Protocol
SBC Session Border Controller
SCTP Stream Control Transmission Protocol
SDH Synchronous Digital Hierarchy (European Equivalent of SONET)
SDP Session Description Protocol
SILK Skype wideband codec (now an internet draft)
SIMPLE SIP for Instant Messaging and Presence
SIP Session Initiation Protocol (RFC 2543)
SLA Service Level Agreement
SMDI Simplified Message Desk Interface
SONET Synchronous Optical Network
SRTP Secure RTP
SS7 Signaling System number 7
STS Synchronous Transport Signal
STS-1/STM-1 51.840 Mbps
STS-3/STM-3 155.52 Mbps
STS-12/STM-12 622.08 Mbps
STS-48/STM-48 2.488 Gbps
STUN Simple Traversal of UDP through NATs
T-1 1.544 Mbps = DS-1 = 24 x 64 Kbps channels
T-3 44.736 Mbps = DS-3 = 28 x T-1s =672 x 64 Kbps channels
TAPI Telephony Application Programming Interface,
TCO Total Cost of Ownership
TCP/IP Transmission Control Protocol/Internetworking Protocol
TIA 568B Pin layouts for RJ45 plugs
TLS Transport Layer Security
TURN Traversal Using Relay NAT
UC Unified Communications
UDP User Datagram Protocol
UTP Unshielded Twisted Pair
URL Universal Resource Locator
VLAN Virtual LAN
VoIP Voice over IP
VoiceXML Voice Extended Markup Language
VP8 Wideband Video codec acquired by Google (public domain)
VPIM Voice Profile for Internet Messaging
VPN Virtual Private Network
WAN Wide Area Network
WEP Wired Equivalent Privacy
WFQ Weighted Fair Queuing
WIMAX Worldwide Interoperability for Microwave Access
WPA Wi-Fi Protected Access
WRED Weighted Random Early Detection
XMPP Extensible Messaging and Presence Protocol