Table Of Contents

glossary

For terms or acronyms not listed below, see Internetworking Terms and Acronyms at the following URL:

http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/index.htm

A
AAA	authentication, authorization, and accounting
ALTDGK	alternate directory gatekeeper
ANI	Automatic Number Identification
AR	Cisco Access Registrar
ARJ	Authorization Reject
ARP	Authorization Permit
ASP	Application service provider
ARQ	Authorization Request

B
BHCA	busy hour call attempts
BAMS	Cisco Billing and Measurements Server

C
CAS	channel-associated signaling
CBWFQ	class-based weighted fair queuing
CDR	call detail record
CIC	Cisco Info Center
CLI	command line interface
CMNM	Cisco Media Gateway Controller (MGC) Node Manager
CO	central office
CORBA	Common Object Request Broker Architecture
CPS	calls per second
CPU	central processing unit
CSR	customer service record
CVM	CiscoWorks2000 Voice Manager

D
DGK	directory gatekeeper
DHCP	Dynamic Host Configuration Protocol
DNIS	Dialed Number Identification Service
DRQ	Disconnect Request
DSP	digital signal processor
DTMF	dual tone, multifunction

E
EMS	element management system
EO	end office
ETSI TIPHON	European Telecommunications Standards Institute Internet Protocol Harmonization over Networks

F
FCAPS	Fault, Configuration, Accounting, and Performance Management System

G
GK	gatekeeper
GKRCS	gatekeeper-routed call signaling
GKTMP	GateKeeper Transaction Message Protocol—a Cisco-proprietary protocol that allows third-party applications to influence the operation of the IOS GK
GW	gateway

H
HSRP	Hot Standby Router Protocol—used to ensure GK fault tolerance

I
IETF	Internet Engineering Task Force
IMT	intermachine trunk
IPM	Cisco's Internetwork Performance Monitor
ISL	Inter-Switch Link
ISP	Internet service provider
ISUP	ISDN User Part
ITSP	Internet telephony service provider
IVR	interactive voice response
IXC	interexchange carrier—a regulated U.S. Class 4 carrier that is often a wholesale customer

L
L2F	Layer 2 Forwarding Protocol
L2TP	Layer 2 Tunnel Protocol
LAC	L2TP access concentrator
LCR	least-cost routing
LDAP	Lightweight Directory Access Protocol
LEC	local exchange carrier
LLQ	low latency queueing
LNS	L2TP network server

M
MF	multifrequency
MGC	Media Gateway Controller; see VSC
MGCP	Media Gateway Control Protocol
MIB	Management Information Base

N
NAS	network access server
NI-2	National ISDN version 2—a BRI circuit
NMS	network management system
NOA	Nature of Address
NOC	network operations center
NTP	Network Time Protocol

O
OGW	originating gateway
OLO	other local operators; other licensed operator
OSP	Open Settlements Protocol
OSS	operations support system
OPT	Open Packet Telephony

P
PCM	pulse code modulation
PDF	Portable Document Format
PIAFS	Personal Handyphone Internet Access Forum Standard
PIN	personal identification number
POP	point of presence
POTS	plain old telephone service
PPM	port policy manager; port policy management
PSTN	public switched telephone network
PTT	Post, Telephone, Telegraph—a government-mandated or -operated national telephony carrier

Q
QoS	quality of service

R
R2	type of CAS used widely in places other than North America
RADIUS	Remote Access Dial-In User Service
RAI	resource availability indicator
RAS	H.225 Registration, Admission, and Status Protocol—spoken between H.323 gateways and their gatekeepers
RLM	redundant link manager
RPM	resource pool management
RPMS	Cisco Resource Pool Manager Server
RRQ	Registration Request
RSVP	Resource Reservation Protocol
RTP	Real-Time Transport Protocol
RTSP	Real-Time Streaming Protocol— for controlling the streaming of RTP packets from a storage source

S
SAA	Cisco Service Assurance Agent
SC	signaling controller—a Cisco SC2200 signaling gateway that converts SS7 to a backhauled NI-2 protocol to gateways
SGCP	Simple Gateway Control Protocol
SIP	Session Initiation Protocol
SLA	service level agreement
SLT	signaling link termination—a Cisco 2611 machine capable of terminating SS7 at the MTP2 layer and backhauling MTP3 (and up) to the SC2200 or virtual switch controller (VSC)
SNMP	Simple Network Management Protocol
SS7	Signaling System 7
SSL	secure socket layer

T
TAC	Technical Assistance Center
TCL	Tool Command Language
TDM	time-division multiplex; time-division multiplexing
TFTP	Trivial File Transfer Protocol
TGW	terminating gateway
TSI	time slot interchange

U
UC	unified communications
UDP	User Datagram Protocol
UG	universal gateway
UGM	Cisco Universal Gateway Manager
UP	universal port
UPS	uninterruptible power supply
URL	uniform resource locator
URQ	Unregistration Request

V
VPDN	virtual private data (dial) network
VPN	virtual private network
VSA	vendor-specific attribute—a nonstandard attribute tag used by RADIUS. Cisco has defined many useful VSAs to enhance the gateway CDR format.
VSC	virtual switch controller—one of various Cisco machines capable of providing SS7 signaling conversion, and able to control gateways by means of MGCP; also referred to as an MGC
VSPT	Cisco Voice Services Provisioning Tool
VXML	Voice eXtensible Markup Language (VoiceXML)

W
WFQ	weighted fair queuing
WIC	WAN interface card

Posted: Wed Oct 6 12:29:53 PDT 2004
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