NL76061C - - Google Patents
Info
- Publication number
- NL76061C NL76061C NL76061DA NL76061C NL 76061 C NL76061 C NL 76061C NL 76061D A NL76061D A NL 76061DA NL 76061 C NL76061 C NL 76061C
- Authority
- NL
- Netherlands
Links
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
- H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH987159X | 1948-05-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL76061C true NL76061C (de) |
Family
ID=4551574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL76061D NL76061C (de) | 1948-05-25 |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH273558A (de) |
DE (1) | DE822113C (de) |
FR (1) | FR987159A (de) |
NL (1) | NL76061C (de) |
-
0
- NL NL76061D patent/NL76061C/xx active
-
1948
- 1948-05-25 CH CH273558D patent/CH273558A/de unknown
-
1949
- 1949-04-21 DE DEP40340A patent/DE822113C/de not_active Expired
- 1949-05-20 FR FR987159D patent/FR987159A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE822113C (de) | 1951-11-22 |
CH273558A (de) | 1951-02-15 |
FR987159A (fr) | 1951-08-09 |