H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 29/10 (2006.01) H04L 29/06 (2006.01) H04M 1/253 (2006.01) H04M 11/06 (2006.01)
Patent
CA 2313592
A telephone main unit, and various plug-in modules which can be installed in the telephone main unit are provided. The telephone main unit has user interface hardware, a data network interface operating on a first external protocol, one or more processors adapted to interact with the user interface hardware through the use of local protocol messages, and an interface for receiving the plug-in module. With this arrangement, local protocol commands generated by the hardware are divertable to the plug-in module. Commands of the first external protocol received over the data network interface are divertable to the plug-in module. Local protocol commands received from the plug-in module which relate to the user interface hardware are used to control the user interface hardware. Finally, commands of said first external protocol received from the plug-in module are sent through the data network interface. In some embodiments, there is no network connection, and the main unit only needs to communicate with the plug-in module. The plug-in module having one or more processors adapted to interact with the main unit through the use of local protocol messages, and an interface for connecting to the main unit. The plug-in module s adapted to receive local protocol commands from the main unit through the interface, receive commands of a first external protocol through the interface, generate local protocol commands to control the main unit's user interface and pass these to the main unit through the interface, and generate commands of the first external protocol and pass these to the main unit through the interface.
Chaput Guy John
Webster William Thomas
Nortel Networks Corporation
Nortel Networks Limited
Smart & Biggar
LandOfFree
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