Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent Deutschland AG
Original Assignee
Standard Elektrik Lorenz 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
Application filed by Standard Elektrik Lorenz AGfiledCriticalStandard Elektrik Lorenz AG
Priority to DE19792928515priorityCriticalpatent/DE2928515A1/de
Publication of DE2928515A1publicationCriticalpatent/DE2928515A1/de
Application grantedgrantedCritical
Publication of DE2928515C2publicationCriticalpatent/DE2928515C2/de
H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
H04M15/12—Discriminative metering, charging or billing
H04M15/24—Discriminative metering, charging or billing preventing metering of tax-free calls to certain lines, e.g. to fire or ambulance stations
Landscapes
Engineering & Computer Science
(AREA)
Health & Medical Sciences
(AREA)
Public Health
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Interface Circuits In Exchanges
(AREA)
DE197929285151979-07-141979-07-14Verfahren und schaltungsanordnung zur schlusszeichengabe bei gebuehrenfreien telefongespraechen
GrantedDE2928515A1
(de)
Einrichtung zum anschluss einer nebenstellenanlage mit fernverkehrssperre an ein warte-waehlsystem, insbesondere an das oesterreichische waehlsystem 48hk
Schaltungsanordnung zur wahlweisen Abgabe von Signalen unterschiedlicher Laenge, insbesondere fuer die Auswahl von Teilnehmer-Sprechstellen einer Gesellschaftsleitung inFernsprechanlagen
