Glossary - Revision history

Gijs at 11:26, 6 March 2007

2007-03-06T11:26:30Z

Gijs at 14:36, 19 February 2007

2007-02-19T14:36:46Z

Gijs at 15:16, 30 January 2007

2007-01-30T15:16:15Z

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* '''ATA''' - ''ATA = Analogue Telephone Adaptor '' Connects an Analogue Telephone to a VOIP network Usually has an Ethernet jack, and an RJ-11 phone jack. Sometimes referred to as VOIP Gateways, TA (Telephone Adaptor), FXS Adaptor, etc. Some ATAs are locked to a particular provider, and useless with any other. Virtually all ATAs use either the SIP or IAX industry standard protocol. [http://www.voip-info.org/wiki-ATA source]
* '''Extension''' - an additional telephone that operates on the main line. Each extension has its own (internal) number, which often can only be reached via the internal telephone network.
* '''PBX''' - A Private Branch eXchange (also called PBX, Private Business eXchange or PABX for Private Automatic Branch eXchange) is a telephone exchange that serves a particular business or office, as opposed to one a common carrier or telephone company operates for many businesses or for the general public. ([http://en.wikipedia.org/wiki/Pbx Source])
* '''Termination''' - When used in telephony-context, the line or route reaches an end-user. When connecting from a VoIP telephone to an end-user on the PSTN, somewhere a PBX should make te connection between those two networks and this PBX can terminate the route.
* '''Trunk''' - A trunk is the telephony service line that you will be using to make an external call on, e.g. the Telstra telephone line that you have at home is a trunk (or it can be used as a trunk if you wish but not necessarily so). A VOIP service provider (VSP) that you have signed up with is also a trunk. ([http://dumbme.voipeye.com.au/trixbox/trixbox_without_tears.pdf Source, p.29])

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 * '''ATA''' - ''ATA = Analogue Telephone Adaptor '' Connects an Analogue Telephone to a VOIP network Usually has an Ethernet jack, and an RJ-11 phone jack.  Sometimes referred to as VOIP Gateways, TA (Telephone Adaptor), FXS Adaptor, etc. Some ATAs are locked to a particular provider, and useless with any other. Virtually all ATAs use either the SIP or IAX industry standard protocol. [http://www.voip-info.org/wiki-ATA source]
 * '''DID''' - Direct Inward Dialing; A specially configured phone line from the telephone company that allows for dialing inside a company directly without having to go through an attendant. A DID line cannot be used for outdial operation since there is no dialtone offered.
 * '''E.164''' - The international public telecommunication numbering plan. An E.164 number uniquely identifies a public network termination point and typically consists of three fields, CC (country code), NDC (national destination code), and SN (subscriber number), up to 15 digits in total.
 * '''Extension''' - an additional telephone that operates on the main line. Each extension has its own (internal) number, which often can only be reached via the internal telephone network.
 * '''Gatekeeper''' - The central control entity that performs management functions in a Voice and Fax over IP network and for multimedia applications such as video conferencing. Gatekeepers provide intelligence for the network, including address resolution, authorization, and authentication services, the logging of CDRs, and communications with network management systems. Gatekeepers control bandwidth, provide interfaces to existing legacy systems, and monitor the network for engineering purposes as well as for real-time network management and load balancing.
 * '''Gateway''' - In IP telephony, a network device that converts voice and fax calls, in real time, between the public switched telephone network (PSTN) and an IP network. The primary functions of an IP gateway include voice and fax compression/ decompression, packetization , call routing, and control signaling. Additional features may include interfaces to external controllers, billing systems, and network management systems.