CH308154A - Telephonanlage mit Einrichtung zum Übertragen von Signalisierungsimpulsen. - Google Patents
Telephonanlage mit Einrichtung zum Übertragen von Signalisierungsimpulsen.Info
- Publication number
- CH308154A CH308154A CH308154DA CH308154A CH 308154 A CH308154 A CH 308154A CH 308154D A CH308154D A CH 308154DA CH 308154 A CH308154 A CH 308154A
- Authority
- CH
- Switzerland
- Prior art keywords
- telephone system
- transmitting signaling
- signaling pulses
- pulses
- transmitting
- Prior art date
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
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1068582T | 1952-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH308154A true CH308154A (de) | 1955-06-30 |
Family
ID=9603826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH308154D CH308154A (de) | 1952-12-24 | 1952-11-29 | Telephonanlage mit Einrichtung zum Übertragen von Signalisierungsimpulsen. |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH308154A (de) |
FR (1) | FR1068582A (de) |
-
1952
- 1952-11-29 CH CH308154D patent/CH308154A/de unknown
- 1952-12-24 FR FR1068582D patent/FR1068582A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1068582A (fr) | 1954-06-28 |
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