EP 1325619 A2 20030709 - FILTER AND METHOD THEREFOR
Title (en)
FILTER AND METHOD THEREFOR
Title (de)
FILTER UND VERFAHREN DARAUS
Title (fr)
FILTRE ET PROCEDE CORRESPONDANT
Publication
Application
Priority
- GB 0104369 W 20011001
- US 67721400 A 20001002
Abstract (en)
[origin: WO0230001A2] A system and mechanism substantially to slow a transient generated during a loop-disconnect activity of a telephone set in a telephone system. The telephone system comprising a plurality of telephone sets (110, 126) coupled in parallel to a subscriber loop (100) and a data modem (138) coupled to the subscriber loop (100) providing data facilities at a frequency above that employed for a voice facility. The filter circuit (116) comprises an inductance (402) and an impedance (404) connected in series with a line, and a shunt element (409) connected in parallel with the line. The filter circuit (116) enables a Calling Line Identification (CLI) facility to be utilised in the telephone system of a subscriber.
IPC 1-7
IPC 8 full level
H04L 25/10 (2006.01); H04M 1/57 (2006.01); H04M 1/715 (2021.01); H04M 11/06 (2006.01)
CPC (source: EP)
H04L 25/10 (2013.01); H04M 1/573 (2013.01); H04M 1/715 (2021.01); H04M 11/062 (2013.01)
Citation (search report)
See references of WO 0230001A2
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0230001 A2 20020411; WO 0230001 A3 20030123; AU 9204301 A 20020415; CA 2424235 A1 20020411; EP 1325619 A2 20030709
DOCDB simple family (application)
GB 0104369 W 20011001; AU 9204301 A 20011001; CA 2424235 A 20011001; EP 01972263 A 20011001