公开(公告)号：EP1192786A1

公开(公告)日：2002-04-03

申请号：EP00946779.6

申请日：2000-06-05

申请人： Dialogic Corporation

发明人： KIELTY, Eugene, E., Jr. ,  DENIES, Steven, G. ,  FRITZINGER, Robert, H.

IPC分类号： H04M1/00

CPC分类号： H04M1/24 ,  H04M3/2272 ,  H04M3/30 ,  H04M3/305 ,  H04M3/42314 ,  H04M3/42323 ,  H04M19/00

摘要： A universal line driver interface (82) which enables a digital telephone computer/telephony interface to configure itself automatically or on the fly to accommodate different PBXs. The interface (82) is connected to a PBX (50') and to a digital telephone (70'). The interface (82) is also connected to network interface logic (66'). A microcontroller (84), which is part of the computer in the computer telephony system, is connected in controlling relation to the interface (82) and to the network interface logic (66'). The microcontroller (84) under program control changes operational parameters in the interface (82) as a function of electrical characteristics of the particular type of PBX to which the interface (82) is connected. The changes in operational parameters of the interface (82), in turn, are used to configure the network interface logic (66') depending upon the type of PBX. The universal nature of the interface (82) is achieved by adaptability to different transmission and receiver voltage levels and an ability to match a range of telephone line impedances.