CH234895A - Circuit arrangement for the determination of participants in telecommunication systems. - Google Patents

Circuit arrangement for the determination of participants in telecommunication systems.

Info

Publication number: CH234895A
Authority: CH; Switzerland
Prior art keywords: participants; determination; circuit arrangement; telecommunication systems; telecommunication
Prior art date: 1938-08-13

Application number

Other languages

German (de)

Inventor

Bell Telephone Manufac Anonyme

Original Assignee

Bell Telephone Mfg

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.)

1938-08-13

Filing date

1939-08-12

Publication date

1944-10-31

1939-08-12 Application filed by Bell Telephone Mfg filed Critical Bell Telephone Mfg

1944-10-31 Publication of CH234895A publication Critical patent/CH234895A/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/08—Metering calls to called party, i.e. B-party charged for the communication

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Exchange Systems With Centralized Control (AREA)
Interface Circuits In Exchanges (AREA)

CH234895D 1938-08-13 1939-08-12 Circuit arrangement for the determination of participants in telecommunication systems. CH234895A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB234895X		1938-08-13

Publications (1)

Publication Number	Publication Date
CH234895A true CH234895A (en)	1944-10-31

Family

ID=10196442

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH234895D CH234895A (en)	1938-08-13	1939-08-12	Circuit arrangement for the determination of participants in telecommunication systems.

Country Status (6)

Country	Link
BE (1)	BE435678A (en)
CH (1)	CH234895A (en)
DE (1)	DE892463C (en)
FR (1)	FR858506A (en)
GB (1)	GB517993A (en)
NL (1)	NL54464C (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1705917A (en) *	1925-02-19	1929-03-19		Toll-service telephone-exchange system
DE635669C (en) *	1932-11-01	1936-09-28	Friedrich Merk Telefonbau Akt	Device for determining the number of a calling subscriber in self-access connection systems
US2193967A (en) *	1933-01-05	1940-03-19	Teletype Corp	Automatic message exchange system

0
- NL NL54464D patent/NL54464C/xx active
- BE BE435678D patent/BE435678A/xx unknown
1938
- 1938-08-13 GB GB23923/38A patent/GB517993A/en not_active Expired
1939
- 1939-07-29 FR FR858506D patent/FR858506A/en not_active Expired
- 1939-08-12 CH CH234895D patent/CH234895A/en unknown
- 1939-08-13 DE DEI3233D patent/DE892463C/en not_active Expired

Also Published As

Publication number	Publication date
NL54464C (en)
DE892463C (en)	1953-10-08
FR858506A (en)	1940-11-27
GB517993A (en)	1940-02-14
BE435678A (en)

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