EP 0916232 A2 19990519 - S o-INTERFACE FOR AN ISDN BASIC ACCESS
Title (en)
S o-INTERFACE FOR AN ISDN BASIC ACCESS
Title (de)
S o-SCHNITTSTELLE FÜR EINEN ISDN-BASISANSCHLUSS
Title (fr)
INTERFACE S o POUR UN ACCES DE BASE RNIS
Publication
Application
Priority
- DE 9800369 W 19980210
- DE 19709710 A 19970310
Abstract (en)
[origin: DE19709710C1] An So-interface for an ISDN basic access for connecting a four-wire line with a pair of receiver wires and a pair of transmitter wires to an ISDN terminal, while separating their potentials, has a capacitor (C1, C2) in each receiver wire (SR1, SR2) and a transformer (T) in each sending wire (SX1, SX2) to separate their potentials. Inductors (L1, L2, L3, L4) are connected to each receiver wire (SR1, SR2) and transmitter wire (SX1, SX2) on the interface side. The pair of receiver wires (SR1, SR2) is preferably connected on the terminal side to a voltage amplifier (OP) whose voltage amplification ratio is the same as that of the transformer (T) in the pair of transmitter wires (SX1, SX2).
IPC 1-7
IPC 8 full level
H04M 1/00 (2006.01); H04M 1/253 (2006.01); H04M 1/738 (2006.01); H04M 11/00 (2006.01); H04Q 11/04 (2006.01)
CPC (source: EP US)
H04Q 11/0471 (2013.01 - EP US)
Citation (examination)
EP 0590242 A1 19940406 - DEUTSCHE TELEPHONWERK KABEL [DE]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19709710 C1 19981001; EP 0916232 A2 19990519; JP 2000505276 A 20000425; US 6370150 B1 20020409; WO 9841051 A2 19980917; WO 9841051 A3 19981223
DOCDB simple family (application)
DE 19709710 A 19970310; DE 9800369 W 19980210; EP 98910597 A 19980210; JP 53904998 A 19980210; US 18925298 A 19981110