Patent ID: 7519171

Claim:
An Integrated Services Digital Network (ISDN) telephone operable in one of a remote mode and a local mode, the telephone comprising: a memory system configured to store data and instructions; and a processor coupled with the memory system and operating with the stored data and instructions to establish call control procedures, in response to a first message received from over a network, the first message containing a first code identifying the origin of an incoming call and indicating that the incoming call should be transferred from a second ISDN telephone to the ISDN telephone and responsive to operation in the remote mode, the processor operative to send a second message 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 from the second telephone requesting transfer of the incoming call, the processor operative to initiate a network transfer of the incoming call to the ISDN telephone, disconnecting the second ISDN telephone from the incoming call.