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Voice over IP/Standard Architectures for Next Generation Networks

< Voice over IP
A basic representation of a worldwide VoIP Network.

IMS(IP Multimedia Subsystem) edit

IMS is currently in development and testing phases, and was originally developed by 3GPP as an architecture for Mobile Networks.

IMS describes a full architecture that uses IP technologies to transport all traffic (both Voice and Data). It tries to re-use existing protocols defined by IETF and other standards bodies instead of re-inventing the wheel. Some of the protocols it reuses are SIP, MEGACO/H.248, SIGTRAN and DIAMETER.

TISPAN edit

TISPAN reuses as much as possible from the IMS architecture and complements it with the required elements to serve fixed/wireless networks.

The work developed by TISPAN is then fed back into IMS.

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