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 (main, further and additional classification)

H04M 1/64; H04M 1/65; H04M 1/72

IPC 8 full level (invention and additional information)

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 (invention and additional information)

H04M 1/654 (2013.01)

Citation (search report)

See references of WO 9922506A2

Designated contracting state (EPC)

DE FR GB

EPO simple patent 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

INPADOC legal status

2002-05-15 [18W] WITHDRAWN

- Date of withdrawal: 20020325

2000-04-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000214

2000-01-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR GB