Wednesday, March 16, 2011

Terminologies

Gateway(GW): The device that connects IP telephony end to the telephony networks.

End User(EU): Ultimate recipient/initiator of calls

Global Switched Telephone Network (GSTN): The worldwide circuit switched network

Location Server (LS): 

  • has IP connectivity
  • knowledge of GW to terminate calls towards GSTN
  • Point of contact for End Users for completing calls
  • Responsible for propagation of gateway information

Information Telephony Administrative Domain (ITAD): A set of GWs and LSs under control of a single administrative authority. EUs are customers of an ITAD.

Location Server Policy: Rules governing how LS processes information it sends & receives via TRIP; this includes aggregating, propagating, generation & accepting information.

Telephony Routing Information Base (TRIB): Database of GWs that a location server builds up as a result of participation in TRIP

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