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JPS5690663A Expired / Lapsed JP ⏱️ 0.0 years remaining

Acceptance system for extension connection information

Assignee: Hitachi Ltd
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Filing: 1979-12-25
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Granted: —
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Expires: 1999-12-25
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Abstract

Abstract PURPOSE:To enable connection control by receiving extension connection information automatically by responding to main-wire incoming by the sound signal of a sound accepting means and by receiving, recognizing and then connecting extension connection information of the sound signal from a person which is requesting the connection. CONSTITUTION:In response to main-wire incoming, the channel of main-wire trunk 2A is led and connected to acceptance trunk 10A via operator's link 20 and from corresponding sound answering device 11, an acceptance message sound signal is sent to a person who is requesting an extension connection. Then, sound recognition device 12 receives and recognizes the extension connecting information of the sound signal from the person which is requesting the connection. On the basis of the result, controller 5 transmits a normal call signal or another call signal, which can be discriminated from the normal one, to EXT4 via switch network 3. On the answer, the recorded and reproduced signal of the transmitted and received sound signal regarding the main-wire incoming is connected to main-wire trunk 2A after being sent from sound recorder 13 or immediately without being sent out, permitting a talk with the extension subscriber.

Inventors

  • 👤 Shigeo Seki
  • 👤 Yuji Arai
  • 👤 Yasuo Kato

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-10-23 10:50
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/58; H04Q3/62; H04Q3/625

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