FR998330A - Procédé et dispositif de signalisation - Google Patents
Procédé et dispositif de signalisationInfo
- Publication number
- FR998330A FR998330A FR998330DA FR998330A FR 998330 A FR998330 A FR 998330A FR 998330D A FR998330D A FR 998330DA FR 998330 A FR998330 A FR 998330A
- Authority
- FR
- France
- Prior art keywords
- signaling method
- signaling
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- 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
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL143014 | 1948-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR998330A true FR998330A (fr) | 1952-01-17 |
Family
ID=19750459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR998330D Expired FR998330A (fr) | 1948-10-28 | 1949-10-28 | Procédé et dispositif de signalisation |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR998330A (fr) |
NL (1) | NL73107C (fr) |
-
0
- NL NL73107D patent/NL73107C/xx active
-
1949
- 1949-10-28 FR FR998330D patent/FR998330A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL73107C (fr) |
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