Title:
CALLING CHANNEL TRACING SYSTEM WITH IDENTIFYING DETECTOR
Document Type and Number:
Japanese Patent JPS58145267
Kind Code:
A
Abstract:
A detector identification device is provided on the premises of the called telephone station capable of detecting network telephone signals, converting them to digital signals and displaying the digital signals. The device is also capable of providing ringing and other calling signals to the called telephone station. The telephone exchange serving the called telephone station is programmed to initiate a back signaling process to the exchange serving the calling telephone station. In addition, the device transmits back signals used to request and thus complete the identification of the calling telephone station from the telephone network.
Inventors:
PEREIRA PINTOS JOSE
CATOIRA JOSE DANIEL MARTIN
CA COSTA RIBEIRO NETO AFFONSO
CATOIRA JOSE DANIEL MARTIN
CA COSTA RIBEIRO NETO AFFONSO
Application Number:
JP17310782A
Publication Date:
August 30, 1983
Filing Date:
October 01, 1982
Export Citation:
Assignee:
TELECOMMUNICATIONS IND
International Classes:
H04M3/42; H04M1/57; H04Q3/72; (IPC1-7): H04M3/42
Domestic Patent References:
| JPS5583367A | 1980-06-23 | |||
| JPS54152411A | 1979-11-30 | |||
| JPS54128206A | 1979-10-04 | |||
| JPS55100779A | 1980-07-31 | |||
| JPS5541051A | 1980-03-22 |
Attorney, Agent or Firm:
Heikichi Odashima