EntityQ3943657· pop 5· linked from 23 articlesSIP TrunkingSign in to saveVOIP and streaming media service based on the Internet via SIP protocolConnectionsInternational Standard Book NumberEntityVoice over IPEntityInternet ProtocolEntitySession Initiation ProtocolEntitypublic switched telephone networkEntityunified communicationsEntitytrunkingEntityPublic Land Mobile NetworkEntityIP PBXEntitySoftswitchEntitysession border controllerEntitylawful interceptionEntityCategoriesTelecommunication servicesVoIP protocols