ITU-T Y.2254 PDF

This Recommendation describes the capabilities of multi-connection to support the enhanced multimedia telephony service (eMMTel).

The scope of this Recommendation includes scenarios, service features, requirements, functional architecture, information flows and other aspects such as security and charging for eMMTel services over the multi-connection functional architecture.

It is noted that eMMTel service in this Recommendation applies the IMS-based NGN environment.