Page 1
G L O S S A R Y 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.
Page 2
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). Digital signal processor. DTMF Dual tone multi-frequency. Cisco SIP IP Phone 7960 Administrator Guide 78-10497-03...
Page 3
(H.245, H.225.0, and Q.931) to describe its actual protocol. H.323 RAS Registration, admission, and status. The RAS signaling function performs registration, admissions, bandwidth changes, status and disengage procedures between the VoIP gateway and the gatekeeper. Cisco SIP IP Phone 7960 Administrator Guide 78-10497-03...
Page 4
This can be necessary in networks which do not support multicast. node A H.323 entity that uses RAS to communicate with the gatekeeper, for example, an endpoint such as a terminal, proxy, or gateway. Cisco SIP IP Phone 7960 Administrator Guide 78-10497-03...
Page 5
MAY offer location services. Registration, admission, and status protocol. This is the protocol that is used between endpoints and the gatekeeper to perform management functions. Robbed bit signaling. Cisco SIP IP Phone 7960 Administrator Guide 78-10497-03...
Page 6
User Agent Server (or user agent): A user agent server is a server application that contacts the user when a SIP request is received, then returns a response on behalf of the user. The response accepts, rejects or redirects the request. Cisco SIP IP Phone 7960 Administrator Guide 78-10497-03...
Page 7
Voice over IP. The ability to carry normal telephone-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.