| 摘要 |
A method and apparatus of communicating with a plurality of cellular comm unication networks employing different communication protocols using a singl e mobile endpoint device, e.g., a cellular phone, are disclosed. In one embo diment, a user cellular phone is provided with a communication protocol conv ersion or switching module that is adapted for interfacing with different ce llular networks operating in a region where the cellular phone is presently located. When a request for an incoming call or an outgoing call is received , the present method evaluates at least one performance factor in selecting one of the plurality of different communication protocols to service or proc ess the incoming call or outgoing call.
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