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Cloud services is a broad term, referring primarily to data-center-hosted services that are run and accessed over an Internet infrastructure. Until recently, these services have been data-centric, but with the evolution of VoIP (voice over Internet protocol), voice has become part of the cloud phenomenon. [1]
Citrix Open Cloud [18] Citrix: Commercial SSO Middleware, native service connectors Cloud Identity Manager: McAfee: Commercial SAML 2, OpenID, OAuth, XACML, LDAP v3, JM Cloud Federation Service [19] Radiant Logic: Commercial SAML 2.0, WS-Federation, OAuth 2.0, OpenID Cloudseal [20] Cloudseal: SaaS Cognito [21] Amazon: Commercial SAML 2.0 ...
Unified communications (UC) is a business and marketing concept describing the integration of enterprise communication services such as instant messaging (chat), presence information, voice (including IP telephony), mobility features (including extension mobility and single number reach), audio, web & video conferencing, fixed-mobile convergence (FMC), desktop sharing, data sharing (including ...
H.323 is a system specification that describes the use of several ITU-T and IETF protocols. The protocols that comprise the core of almost any H.323 system are: [8] H.225.0 Registration, Admission and Status (RAS), which is used between an H.323 endpoint and a Gatekeeper to provide address resolution and admission control services.
As IP PBX is software, functions and features can be designed based on the customers' requirements such as conference calling, XML-RPC control of live calls, interactive voice response (IVR), TTS/ASR (text to speech/automatic speech recognition), PSTN interconnectability supporting both analog and digital circuits, VoIP protocols including SIP ...
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STUN is used in some of the sip phones to enable the SIP/RTP packets to cross boundaries of two different IP networks. A packet becomes unroutable between two sip elements if one of the networks uses private IP address range and other is in public IP address range. Stun is a mechanism to enable this border traversal.
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