IT1274264B - Telephone exchange system for enclosed surroundings, with public telephone branch terminals - Google Patents

Telephone exchange system for enclosed surroundings, with public telephone branch terminals

Info

Publication number
IT1274264B
IT1274264B ITTO940307A ITTO940307A IT1274264B IT 1274264 B IT1274264 B IT 1274264B IT TO940307 A ITTO940307 A IT TO940307A IT TO940307 A ITTO940307 A IT TO940307A IT 1274264 B IT1274264 B IT 1274264B
Authority
IT
Italy
Prior art keywords
telephone
lines
exchange
public
exchange system
Prior art date
Application number
ITTO940307A
Other languages
Italian (it)
Inventor
Massimo Mondardini
Original Assignee
Urmet Sud Costr Elett Telefon
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 Urmet Sud Costr Elett Telefon filed Critical Urmet Sud Costr Elett Telefon
Priority to ITTO940307A priority Critical patent/IT1274264B/en
Publication of ITTO940307A0 publication Critical patent/ITTO940307A0/en
Publication of ITTO940307A1 publication Critical patent/ITTO940307A1/en
Application granted granted Critical
Publication of IT1274264B publication Critical patent/IT1274264B/en

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The system comprises a telephone exchange 10, with one or more private telephone lines 12 leading to it and a plurality of internal branch telephone sets 11 and an add- on module 20 associated with said exchange, to which go external telephone lines 21 with 12 kilohertz metering, lines of interconnection 22 with the exchange 10, and internal lines 23 for connection of internal branches comprised of telephone terminals TP with public telephony operation. The add-on module 20 includes a modem over voice which, by using any given external telephone line 21', is connected via telematic network 32 to the devices 31 of the central office for the public telephone operation of said terminals TP. <IMAGE>
ITTO940307A 1994-04-19 1994-04-19 Telephone exchange system for enclosed surroundings, with public telephone branch terminals IT1274264B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITTO940307A IT1274264B (en) 1994-04-19 1994-04-19 Telephone exchange system for enclosed surroundings, with public telephone branch terminals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO940307A IT1274264B (en) 1994-04-19 1994-04-19 Telephone exchange system for enclosed surroundings, with public telephone branch terminals

Publications (3)

Publication Number Publication Date
ITTO940307A0 ITTO940307A0 (en) 1994-04-19
ITTO940307A1 ITTO940307A1 (en) 1995-10-19
IT1274264B true IT1274264B (en) 1997-07-17

Family

ID=11412473

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO940307A IT1274264B (en) 1994-04-19 1994-04-19 Telephone exchange system for enclosed surroundings, with public telephone branch terminals

Country Status (1)

Country Link
IT (1) IT1274264B (en)

Also Published As

Publication number Publication date
ITTO940307A0 (en) 1994-04-19
ITTO940307A1 (en) 1995-10-19

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970319