| 摘要 |
A user equipment can have simultaneous peer to peer circuit switched and Internet protocol multimedia subsystem communications that allow content presentation to the user. The communicating user equipment can indicate their packet switched Internet protocol multimedia subsystem combinational service capabilities to each other, and further, monitor the capability of the associated radio access network. Thereafter, when a capability exchange is undertaken, session initiation protocol messages can be exchanged between the communicating user equipments to determine and initialize the appropriate conversational communications medium.
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