GL-1
Cisco SIP IP Phone Administrator Guide
G L O S S A R Y
A
AAA
Authentication, authorization, and accounting. AAA is a suite of network security services that
provides the primary framework through which access control can be set up on your Cisco router or
access server.
ANI
Automatic number identification.
B
BTXML
Basic telephony extensible markup language
C
CAS
Channel-associated signaling.
CCAPI
Call control applications programming interface.
CLI
Command-line interface.
CO
Central office.
CPE
Customer premises equipment. Terminating equipment, such as terminals, telephones, and modems,
supplied by the telephone company, installed at the customer sites, and connected to the telephone
company network.
CSM
Call switching module.
D
dial peer
An addressable call endpoint. In Voice over IP (VoIP), there are two types of dial peers: POTS and VoIP.
DNS
Domain Name System. Used to address translation to convert H.323 IDs, URLs, or e-mail IDs to IP
addresses. DNS is also used to assist in the locating remote gatekeepers and to reverse-map raw IP
addresses to host names of administrative domains.
DNIS
Dialed number identification service (the called number)