Wireless private branch exchange system for use with mobile communication devices

A wireless private branch exchange system for use with a first plurality of mobile communication devices associated with a wireless network, and a second plurality of communication devices operable to communicate with the wireless network, each communication device of the first plurality of mobile communication devices and the second plurality of communication devices having a first unique identification number representative of a public exchange number, said wireless private branch exchange system comprising:

• first control means operable to define, for each of the first plurality of mobile communication devices, a second unique identification number representative of a private branch exchange extension number, shorter than said first identification number;
• communication control means, connected to said first control means and to the wireless network, operable to define a predetermined coverage area, to control and identify wireless communication between each mobile communication device of the first plurality of mobile communication devices within said predetermined coverage area via the wireless network, and to enable and identify communication between the first plurality of mobile communication devices and the second plurality of communication devices via the wireless network, such that:
• when a first mobile communication device of the first plurality of mobile communication devices located within said coverage area transmits, to said communication control means, a unique second identification number associated with a second mobile communication device of the first plurality of mobile communication devices, also within said coverage area, said communication control means connects said first and second mobile communication devices via the wireless network to enable communication therebetween, and asserts a first signal indicative of an internal communication, and
• when said first mobile communication device of the first plurality of mobile communication devices transmits, to said communication control means, a unique first identification number associated with a third communication device of the second plurality of communication devices, said communication control means connects said first mobile communication device to the wireless network to enable communication with said third communication device, and asserts a second signal indicative of an external communication;
• and
• first register means, connected to said communication control means, operable to provide a record of internal wireless communications within the first plurality of mobile communication devices by recording said first signal for each instance of said internal wireless communication by each mobile communication device of the first plurality of mobile communication devices, and to provide a record of external wireless communications between the first plurality of mobile communication devices and the second plurality of communication devices by recording said second signal for each instance of said external wireless communication by each mobile communication device of the first plurality of mobile communication devices.