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GBE-Case study for Thales

Glossary

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. 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. (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. (Source, p.29)

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