Enterprise phone that can provide professional services during a communication set up on a private cellular phone

1. An enterprise phone adapted to provide professional services during a communication set up in a mobile network on a private cellular phone, comprising:

a first user agent coupled to a communication server of an enterprise communication network to represent the enterprise phone as a terminal of the enterprise communication network;

a classical audio interface coupled to the first user agent;

a first wireless transmitter-receiver adapted to communicate with a second wireless transmitter-receiver embedded in the private cellular phone; and

a second user agent coupled to the first wireless transmitter-receiver, the second user agent being coupled to the communication server to represent a private cellular phone as a virtual terminal of the enterprise communication network, the second user agent being adapted to request a set up of a second communication between itself and the first user agent so that a mobile communication already set up on the private cellular phone is connected to the enterprise phone.

2. The enterprise phone according to claim 1 , wherein the first and second wireless transmitter-receivers are Bluetooth transmitter-receivers.

3. The enterprise phone according to claim 1 , wherein the first and second wireless transmitter-receivers are WiFi transmitter-receivers, and comprising means for sending a SIP message INVITE to a user agent of the private cellular phone, this message requesting an audio connection between the user agent of the private cell phone and the second user agent of the enterprise phone.

4. A desk phone adapted to transfer a mobile communication set up on a private cellular phone over a mobile network to the desk phone, the desk phone comprising:

a first user agent coupled to a communication server of an enterprise communication network to represent the desk phone as a terminal of the enterprise communication network;

a classical audio interface coupled to the first user agent;

a first Bluetooth transmitter-receiver adapted to communicate with a second Bluetooth transmitter-receiver embedded in the private cellular phone; and

a second user agent coupled to the first Bluetooth transmitter-receiver, the second user agent coupled to the communication server to represent a private cellular phone as a virtual terminal of the enterprise communication network, the second user agent adapted to request a set up of a second communication between itself and the first user agent through the communication server so that a mobile communication already set up on the private cellular phone is connected to the first user agent of the desk phone.

5. A method of transferring a mobile communication set up on a private cellular phone over a cellular network to a desk phone coupled to an enterprise network, the method executed by the desk phone and comprising the steps of:

notifying a user of the private cellular phone of the availability of a Bluetooth connection with the desk phone;

activating a Bluetooth connection between a first Bluetooth transmitter-receiver in the desk phone and a second Bluetooth transmitter-receiver in the private cellular phone;

establishing a call from a private cellular phone user agent to a desk phone user agent through a communication server in the enterprise network; and

connecting the mobile communication from the private cellular phone to the desk phone user agent using the Bluetooth connection.