A method and structure for a communication system has a first-level regional server connected to a first agency and a second agency, and a second-level regional server connected to a plurality of the first-level regional servers. The second-level regional server has a first connection for connecting to one first-level regional server. The invention also has a second connection for connecting to another first-level regional server. The invention also includes a global directory and a central processing unit.

 
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< Real time call trace capable of use with multiple elements

< Shared-use portable telephone and method of sharing portable telephone

> Mobile telephone

> Cellular phone housing

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