AT287074B - Circuit arrangement for determining the existence of loop states in a telephone private branch exchange - Google Patents

Circuit arrangement for determining the existence of loop states in a telephone private branch exchange

Info

Publication number
AT287074B
AT287074B AT946667A AT946667A AT287074B AT 287074 B AT287074 B AT 287074B AT 946667 A AT946667 A AT 946667A AT 946667 A AT946667 A AT 946667A AT 287074 B AT287074 B AT 287074B
Authority
AT
Austria
Prior art keywords
existence
determining
circuit arrangement
private branch
branch exchange
Prior art date
Application number
AT946667A
Other languages
German (de)
Inventor
Guenter Hovorka
Original Assignee
Itt Austria
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 Itt Austria filed Critical Itt Austria
Priority to AT946667A priority Critical patent/AT287074B/en
Priority to CH1544868A priority patent/CH481538A/en
Priority to DE19681803995 priority patent/DE1803995A1/en
Application granted granted Critical
Publication of AT287074B publication Critical patent/AT287074B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
AT946667A 1967-10-20 1967-10-20 Circuit arrangement for determining the existence of loop states in a telephone private branch exchange AT287074B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT946667A AT287074B (en) 1967-10-20 1967-10-20 Circuit arrangement for determining the existence of loop states in a telephone private branch exchange
CH1544868A CH481538A (en) 1967-10-20 1968-10-16 Circuit arrangement for loop current monitoring
DE19681803995 DE1803995A1 (en) 1967-10-20 1968-10-19 Circuit arrangement for loop current monitoring in telecommunications, in particular telephone branch exchange systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT946667A AT287074B (en) 1967-10-20 1967-10-20 Circuit arrangement for determining the existence of loop states in a telephone private branch exchange

Publications (1)

Publication Number Publication Date
AT287074B true AT287074B (en) 1971-01-11

Family

ID=3614390

Family Applications (1)

Application Number Title Priority Date Filing Date
AT946667A AT287074B (en) 1967-10-20 1967-10-20 Circuit arrangement for determining the existence of loop states in a telephone private branch exchange

Country Status (3)

Country Link
AT (1) AT287074B (en)
CH (1) CH481538A (en)
DE (1) DE1803995A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007001413A1 (en) * 2007-01-09 2008-07-10 Siemens Ag contraption

Also Published As

Publication number Publication date
DE1803995A1 (en) 1969-08-21
CH481538A (en) 1969-11-15

Similar Documents

Publication Publication Date Title
BG15731A3 (en) HERBICIDIC AGENTS
CH496383A (en) Automatic telecommunication switching system
FR1509638A (en) Clothing clip
CH464620A (en) Tapping clamp
FR1522266A (en) Waterproof faucet
FR92539E (en) Mixer tap
FR1522441A (en) Stocking clip
CH479009A (en) Mixer tap
AT287074B (en) Circuit arrangement for determining the existence of loop states in a telephone private branch exchange
AT293289B (en) Mixer tap
AT309638B (en) Detergent mixes
DE1814437B2 (en) CONNECTING CLAMP
FI43896C (en) Telephone exchange
AT284772B (en) LIGHTENING AGENTS
FR1534895A (en) Tap
FR1529626A (en) Clamp
AT275654B (en) Solids bath
AT268387B (en) Telephone exchange
AT304648B (en) Circuit arrangement for determining changes in the switching status of subscriber connections
DE1650033B2 (en) CLAMP
AT286153B (en) Snap hook
CH492373A (en) Automatic telephone exchange
AT280106B (en) Switching arrangement in automatic intercoms
AT297806B (en) Circuit arrangement for testing connection lines in telephone exchange systems
FR1526182A (en) Formwork table