Method of sharing and transferring information between ISDN telephones

A telephone operable on an Integrated Services Digtal Network (ISDN), the telephone operable in one of a remote mode and a local mode, the telephone comprising:

• a system bus;
• a network interface to provide connection between the system bus and the network;
• a memory system coupled with the system bus to store data and instructions;
• and
• a processor coupled with the network interface and operating with the stored data and instructions to establish call control procedures,
• in response to a first message over the network containing a first code identifying the origin of the an incoming call and indicating the incoming call should be transferred from a second telephone connected with the network to the telephone and responsive to operation in the remote mode, the processor operative to send a second message through the network to the second telephone, the message including the first code and a second code identifying the origin of the second message,
• in response to a third message over the network from the second telephone requesting transfer of the incoming call, the processor operative to initiate a network transfer of the incoming call to the second telephone, disconnecting the telephone from the incoming call.