Chap 1: Overview of the Session Initiation Protocol

Classifications

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  • H04L29/12094—Directories; name-to-address mapping involving standard directories and standard directory access protocols using Voice over IP [VoIP] directories, e.g. Session Initiation Protocol [SIP] registrar or H.323 gatekeeper
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  • H04M7/00—Interconnection arrangements between switching centres
  • H04M7/12—Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
• • H—ELECTRICITY
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  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/42—Systems providing special services or facilities to subscribers
  • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

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