Glossary of terms used on OpenPBX.org wiki pages

AGI

• Asterisk Gateway Interface, an interface to run external scripts within the Asterisk PBX' dialplan.

API

• Application Programming Interface

BRI

• Basic Rate ISDN

CLI

• Command Line Interface

DSP

• Digital Signal Processing

GPL

• GNU General Public License - an open source license published by the Free Software Foundation

H.323

• an ITU recommendation of a signaling protocol suite for VoIP and video conferencing

IAX2

• Inter Asterisk eXchange, a VoIP protocol initially designed for peering Asterisk servers

IP

• Internet Protocol, short name for the TCP/IP suite of protocols

IRC

• Internet Relay Chat

ISDN

• Integrated Services Digital Network

IVR

• Interactive Voice Response

Jingle

• Jingle is a VoIP extension to the XMPP/Jabber instant messaging protocol

LTP

• Lightweight Telephony Protocol - a signaling and media protocol for VoIP

MFC/R2

• Multi-Frequency Code signaling Release 2, a channel associated signaling protocol

MGCP

• Media Gateway Control Protocol - a signaling protocol for VoIP

NAT

• Network Address Translation - a scheme to route traffic between private non-routable IP addresses on a LAN and public IP address on the internet

OGI

• OpenPBX Gateway Interface, same as AGI, but renamed for use with OpenPBX.org

PBX

• Private Branch eXchange

POSIX

• Portable Operating System Interface for uniX - a suite of standards for cross-platform compatibility between Unix operating systems

POTS

• Plain Old Telephone System, usually referring to analog telephone lines

PRI

• Primary Rate ISDN

PSTN

• Public Switched Telephone Network

RC

• Release Candidate

RTP

• Real-time Transport Protocol - a media protocol used in conjunction with H.323, MGCP and SIP.

SIP

• Session Initiation Protocol - a signaling protcol, used for but not limited to VoIP

SCCP

• Skinny Client Control Protocol, a proprietary signaling protocol for VoIP by Cisco

STUN

• Simple Traversal of UDP through NAT - a scheme to work around difficulties when traversing NAT. STUN is defined in RFC3489.

SVN

• short name for the Subversion revision control system by CollabNet

T.38

• a fax over IP standard

UDP

• User Datagram Protocol - one of the protocols of the TCP/IP protocol suite. UDP is defined in RFC768.

VoIP

• Voice over Internet Protocol - a generic term for protocols used to carry telephone calls over IP.

XMPP

• Extensible Messaging and Presence Protocol - an instant messaging protocol used by Jabber and Googletalk

Zaptel

• Zapata Telephony interface, initially for use with telephony hardware designed by the Zapata project