Patent ID: 6735297
Filing Date: 2004-05-11
Classification: H04M

Abstract:
A programmable telephone system comprising:a plurality of phones; control unit connected to said plurality of phones, said control unit being connectable to an external telephone system, said control unit controlling how each of said plurality of phones communicate with each other and also communicate with the external telephone system; system software arranged in said control unit, said system software including instructions for operating said control unit to control how said each of said plurality of phones communicate with each other and also communicate with the external telephone system, said system software requiring license information to operate; a system board arranged in said control unit, said system board executing said instructions of said system software; a system specific memory arranged in said control unit, said system specific memory storing said license information, said system specific memory being separately replaceable from said system board in said control unit, wherein: said control unit includes a plurality of components divided into different physical modules, said system board being arranged in a first of said modules and said system specific memory being arranged in a second of said modules, said first and second modules being separate from each other and separately replaceable in said control unit.