ANO
Analog Gateway User Manual
2 &y
www.allo.com
Version 2.0
61
PBX
Private Branch Exchange: An in-house telephone switching system that
interconnects telephone extensions to each other, as well as to the outside
telephone network.
PROXY
A server that receives requests intended for another server and that acts on
the behalf of the client behalf (as the client proxy) to obtain the requested
service. A proxy server is often used when the client and the server are
incompatible for direct connection. For example, the client is unable to meet
the security authentication requirements of the server but should be
permitted.
SIP
Session Initiation Protocol: An application-layer control protocol, a Signaling
protocol for Internet Telephony. SIP can establish sessions for features such
as audio/videoconferencing, interactive gaming, and call forwarding to be
deployed over IP networks thus enabling service providers to integrate basic
IP telephony services with Web, e-mail, and chat services. In addition to user
authentication, redirect and registration services, SIP Server supports
traditional telephony features such as personal mobility, time-of-day is
routing and call forwarding based on the geographical location of the person
being called.
PSTN
Public Switched Telephone Network: This is defined as the regular telephone
network services.
VOIP
Voice over Internet Protocol. The technology used to transmit voice
conversations over a data network using the Internet Protocol. Such data
network may be the Internet or a corporate Intranet.
WAN
Wide Area Network. A computer network that spans a relatively large
geographical area. Typically, a WAN consists of two or more local-area
networks (LANs).