Cisco Systems ATA 186, ATA 188 manual GL-4

Glossary

IP

IVR

Internet Protocol. Network layer protocol in the TCP/IP stack offering a connectionless internetwork service. IP provides features for addressing, type-of-service specification, fragmentation and reassembly, and security. Defined in RFC 791.

Interactive voice response. Term used to describe systems that provide information in the form of recorded messages over telephone lines in response to user input in the form of spoken words or, more commonly, DTMF signaling.

L

LDAP	Lightweight DirectoryAccess Protocol
LEC	local exchange carrier.
Location Server	A SIP redirect or proxy server uses a location server to get information about a caller’s location.
	Location services are offered by location servers.

M

MGCP	Media Gateway Control Protocol.
MWI	message waiting indication.
µ-law	North American companding standard used in conversion between analog and digital signals in PCM
	systems. Similar to the European a-law. See also a-law and companding.

N

NAT

NSE packets

NAT Server

NTP

Network Address Translation. Mechanism for reducing the need for globally unique IP addresses. NAT allows an organization with addresses that are not globally unique to connect to the Internet by translating those addresses into globally routable address spaces. Also known as Network Address Translator.

Real-Time Transport Protocol (RTP) digit events are encoded using the Named Signaling Event (NSE) format specified in RFC 2833, Section 3.0.

Network Address Translation. an Internet standard that enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for external traffic.

Network Time Protocol. Protocol built on top of TCP that assures accurate local time-keeping with reference to radio and atomic clocks located on the Internet. This protocol is capable of synchronizing distributed clocks within milliseconds over long time periods.

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)

GL-4 OL-4803-01