IT1261137B - Telephone line protection device - Google Patents

Telephone line protection device

Info

Publication number
IT1261137B
IT1261137B ITTO931008A ITTO931008A IT1261137B IT 1261137 B IT1261137 B IT 1261137B IT TO931008 A ITTO931008 A IT TO931008A IT TO931008 A ITTO931008 A IT TO931008A IT 1261137 B IT1261137 B IT 1261137B
Authority
IT
Italy
Prior art keywords
telephone line
protection device
line protection
detector
current
Prior art date
Application number
ITTO931008A
Other languages
Italian (it)
Inventor
Gianpiero Bianchi
Original Assignee
Alpitel Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alpitel Spa filed Critical Alpitel Spa
Priority to ITTO931008A priority Critical patent/IT1261137B/en
Publication of ITTO931008A0 publication Critical patent/ITTO931008A0/en
Publication of ITTO931008A1 publication Critical patent/ITTO931008A1/en
Application granted granted Critical
Publication of IT1261137B publication Critical patent/IT1261137B/en

Links

Landscapes

  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Telephone line protection device comprising a detector of voltage in the telephone line; a detector of current in the telephone line; and an electronic controller which recognizes an alarm condition and generates an alarm signal on the occurrence of such a condition, and which is associated with current injectors for sending a disturbance signal along the line. <IMAGE>
ITTO931008A 1993-12-29 1993-12-29 Telephone line protection device IT1261137B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITTO931008A IT1261137B (en) 1993-12-29 1993-12-29 Telephone line protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO931008A IT1261137B (en) 1993-12-29 1993-12-29 Telephone line protection device

Publications (3)

Publication Number Publication Date
ITTO931008A0 ITTO931008A0 (en) 1993-12-29
ITTO931008A1 ITTO931008A1 (en) 1995-06-29
IT1261137B true IT1261137B (en) 1996-05-09

Family

ID=11411981

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO931008A IT1261137B (en) 1993-12-29 1993-12-29 Telephone line protection device

Country Status (1)

Country Link
IT (1) IT1261137B (en)

Also Published As

Publication number Publication date
ITTO931008A0 (en) 1993-12-29
ITTO931008A1 (en) 1995-06-29

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Legal Events

Date Code Title Description
0001 Granted