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  2. Session Initiation Protocol - Wikipedia

    en.wikipedia.org/wiki/Session_Initiation_Protocol

    SIP-I, Session Initiation Protocol with encapsulated ISUP, is a protocol used to create, modify, and terminate communication sessions based on ISUP using SIP and IP networks. Services using SIP-I include voice, video telephony, fax and data. SIP-I and SIP-T [29] are two protocols with similar features, notably to allow ISUP messages to be ...

  3. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    The Session Initiation Protocol (SIP) is a signaling protocol used for controlling communication sessions such as Voice over IP telephone calls. SIP is based on request/response transactions, in a similar manner to the Hypertext Transfer Protocol (HTTP).

  4. VoIP phone - Wikipedia

    en.wikipedia.org/wiki/VoIP_phone

    There are several Wi-Fi enabled mobile phones and PDAs that have pre-installed SIP client software, or are capable of running IP telephony clients, including most smartphones. Analog telephone adapters provide an interface for traditional analog telephones to a voice-over-IP network.

  5. SIP trunking - Wikipedia

    en.wikipedia.org/wiki/SIP_trunking

    SIP trunking is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications facilities. [1]

  6. List of SIP software - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_software

    Dialexia VoIP Softswitches, IP PBX for medium and enterprise organizations, billing servers. IBM WebSphere Application Server - Converged HTTP and SIP container JEE Application Server; Interactive Intelligence Windows-based IP PBX for small, medium and enterprise organizations; Kerio Operator, IP PBX for small and medium enterprises

  7. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    Voice over Internet Protocol (VoIP), [a] also known as IP telephony, ... Session Initiation Protocol (SIP), [9] connection management protocol developed by the IETF;

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