Global Patent Index - EP 0968598 A2

EP 0968598 A2 2000-01-05 - TELEPHONE SYSTEM WITH ANSWERING MACHINE

Title (en)

TELEPHONE SYSTEM WITH ANSWERING MACHINE

Title (de)

FERNSPRECHSYSTEM MIT ANRUFBEANTWORTER

Title (fr)

SYSTEME TELEPHONIQUE A REPONDEUR

Publication

EP 0968598 A2 (EN)

Application

EP 98946667 A

Priority

  • EP 98946667 A
  • EP 97203344 A
  • IB 9801656 W

Abstract (en)

[origin: WO9922506A2] The present invention relates to a telephone system (1) comprising at least one telephone subset (3) and an answering machine (5) which are connected, in parallel, to an outside telephone line (9). The system (1) has a first line terminal (11) and a second line terminal (13). The answering machine (5) comprises tone-generating means (37) for generating a probe tone from the answering machine (5) to the first and second line terminals (11, 13). The system (1) further comprises detection means (41, 43, 45) for detecting a change in reflected residue of said tone in response to an impedance change between the telephone system (1) and the outside telephone line (9).

IPC 1-7

H04M 1/64; H04M 1/65; H04M 1/72

IPC 8 full level

H04M 1/00 (2006.01); H04M 1/64 (2006.01); H04M 1/65 (2006.01); H04M 1/654 (2006.01); H04M 1/72 (2006.01); H04Q 7/38 (2006.01)

CPC

H04M 1/654 (2013.01)

Citation (search report)

See references of WO 9922506A3

DCS

DE FR GB

DOCDB simple family

WO 9922506 A2 19990506; WO 9922506 A3 19990812; CN 1249100 A 20000329; EP 0968598 A2 20000105; JP 2001507554 A 20010605; KR 20000069724 A 20001125