LU80182A1 - CIRCUIT ARRANGEMENT FOR TELE-COMMUNICATION SYSTEMS, IN PARTICULAR TELE-COMMUNICATION SYSTEMS WITH SWITCHING DEVICES AND THEIR COMMON INQUIRY DEVICES - Google Patents

CIRCUIT ARRANGEMENT FOR TELE-COMMUNICATION SYSTEMS, IN PARTICULAR TELE-COMMUNICATION SYSTEMS WITH SWITCHING DEVICES AND THEIR COMMON INQUIRY DEVICES

Info

Publication number
LU80182A1
LU80182A1 LU80182A LU80182A LU80182A1 LU 80182 A1 LU80182 A1 LU 80182A1 LU 80182 A LU80182 A LU 80182A LU 80182 A LU80182 A LU 80182A LU 80182 A1 LU80182 A1 LU 80182A1
Authority
LU
Luxembourg
Prior art keywords
communication systems
tele
devices
circuit arrangement
switching devices
Prior art date
Application number
LU80182A
Other languages
German (de)
Inventor
J Roehrig
Original Assignee
Siemens Ag
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
Priority claimed from DE19772744118 external-priority patent/DE2744118A1/en
Priority claimed from DE19772748795 external-priority patent/DE2748795A1/en
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of LU80182A1 publication Critical patent/LU80182A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/72—Finding out and indicating number of calling subscriber

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Telephonic Communication Services (AREA)
LU80182A 1977-09-30 1978-08-31 CIRCUIT ARRANGEMENT FOR TELE-COMMUNICATION SYSTEMS, IN PARTICULAR TELE-COMMUNICATION SYSTEMS WITH SWITCHING DEVICES AND THEIR COMMON INQUIRY DEVICES LU80182A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772744118 DE2744118A1 (en) 1977-09-30 1977-09-30 Telephone exchange with single interrogate unit for several lines - uses interrogate pulse trains of at least two different frequencies to increase unit's capacity
DE19772748795 DE2748795A1 (en) 1977-10-31 1977-10-31 Switching characteristics monitor for telecommunications exchange - repeatedly interrogates switching devices and successively compares results

Publications (1)

Publication Number Publication Date
LU80182A1 true LU80182A1 (en) 1979-02-12

Family

ID=25772826

Family Applications (1)

Application Number Title Priority Date Filing Date
LU80182A LU80182A1 (en) 1977-09-30 1978-08-31 CIRCUIT ARRANGEMENT FOR TELE-COMMUNICATION SYSTEMS, IN PARTICULAR TELE-COMMUNICATION SYSTEMS WITH SWITCHING DEVICES AND THEIR COMMON INQUIRY DEVICES

Country Status (6)

Country Link
AT (1) ATA698478A (en)
CH (1) CH631304A5 (en)
FR (1) FR2404980A1 (en)
GB (1) GB2006573B (en)
IT (1) IT1099616B (en)
LU (1) LU80182A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU193325B (en) * 1985-03-29 1987-09-28 Bhg Hiradastech Vallalat Scanning and preprocessing circuit for centrally controlled apparatuses, preferably telephone exchanges
ATE50107T1 (en) * 1985-08-14 1990-02-15 Siemens Ag CIRCUIT ARRANGEMENT FOR TELECOMMUNICATION SYSTEMS, IN PARTICULAR TELEPHONE EXCHANGE SYSTEMS, WITH INFORMATION REQUEST DEVICES CYCLICLY CONTROLLING REQUEST POINTS.
GB2339119B (en) 1998-06-30 2003-05-21 Mitel Corp Method and apparatus for event detection in a switching system

Also Published As

Publication number Publication date
IT7828249A0 (en) 1978-09-29
ATA698478A (en) 1982-09-15
CH631304A5 (en) 1982-07-30
GB2006573B (en) 1982-01-13
IT1099616B (en) 1985-09-18
FR2404980A1 (en) 1979-04-27
GB2006573A (en) 1979-05-02

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