DK77899C - Device at automatic telephone exchanges for call billing. - Google Patents

Device at automatic telephone exchanges for call billing.

Info

Publication number
DK77899C
DK77899C DK373850A DK373850A DK77899C DK 77899 C DK77899 C DK 77899C DK 373850 A DK373850 A DK 373850A DK 373850 A DK373850 A DK 373850A DK 77899 C DK77899 C DK 77899C
Authority
DK
Denmark
Prior art keywords
automatic telephone
telephone exchanges
call billing
billing
call
Prior art date
Application number
DK373850A
Other languages
Danish (da)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of DK77899C publication Critical patent/DK77899C/en

Links

DK373850A 1949-11-28 1950-11-17 Device at automatic telephone exchanges for call billing. DK77899C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE77899X 1949-11-28

Publications (1)

Publication Number Publication Date
DK77899C true DK77899C (en) 1954-08-02

Family

ID=20272313

Family Applications (1)

Application Number Title Priority Date Filing Date
DK373850A DK77899C (en) 1949-11-28 1950-11-17 Device at automatic telephone exchanges for call billing.

Country Status (1)

Country Link
DK (1) DK77899C (en)

Similar Documents

Publication Publication Date Title
FR1044709A (en) Selector for automatic telephone exchanges
CH276285A (en) Subscriber telephone set circuit.
CH304196A (en) Telephone system with subscriber set.
CH287723A (en) Automatic switching device for telecommunication exchange.
FR1023959A (en) Improvements to automatic telephone exchanges
CH276568A (en) Subscriber circuit in an automatic telephone system.
DK77899C (en) Device at automatic telephone exchanges for call billing.
CH297628A (en) Subscriber circuit for call seekers.
DK81237C (en) Device for diverting ringing signals by telephone sets.
CH343462A (en) Telephone subscriber set
DK77276C (en) Coupling to automatic telephone exchanges for sending out automatically repeated ringtones.
DK89108C (en) Line selection system for automatic telephone exchanges.
DK82374C (en) Coupling device at automatic telephone stations.
AT185412B (en) Automatic telephone dialing system
CH273262A (en) Device to remember a number to be dialed to an automatic telephone for the call.
DK75049C (en) Telephone subscriber device.
CH278196A (en) Additional device for amplifying telephone calls.
FI26299A (en) A device to facilitate nemero dialing when making a call on an automatic telephone
CH275990A (en) Telephone subscriber station.
FR1020507A (en) Device for disinfecting a telephone microphone
DK89645C (en) Coupling to inquiry calls at private automatic telephone exchanges.
ES188722A1 (en) AN ACCESSORY FOR A SUBSCRIBER TELEPHONE APPLIANCE
DK80749C (en) Coordinator of the coordinate dial type for automatic telephone exchanges.
FR59587E (en) Crossbar switch for automatic telephone systems
DK72315C (en) Device for fork contacts in telephone sets.