JPS5725105B2 - - Google Patents
Info
- Publication number
- JPS5725105B2 JPS5725105B2 JP12263976A JP12263976A JPS5725105B2 JP S5725105 B2 JPS5725105 B2 JP S5725105B2 JP 12263976 A JP12263976 A JP 12263976A JP 12263976 A JP12263976 A JP 12263976A JP S5725105 B2 JPS5725105 B2 JP S5725105B2
- Authority
- JP
- Japan
- 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
- H04Q1/44—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
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12263976A JPS5347708A (en) | 1976-10-13 | 1976-10-13 | Test circuit for multi-frequency signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12263976A JPS5347708A (en) | 1976-10-13 | 1976-10-13 | Test circuit for multi-frequency signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5347708A JPS5347708A (en) | 1978-04-28 |
JPS5725105B2 true JPS5725105B2 (fr) | 1982-05-27 |
Family
ID=14840939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12263976A Granted JPS5347708A (en) | 1976-10-13 | 1976-10-13 | Test circuit for multi-frequency signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5347708A (fr) |
-
1976
- 1976-10-13 JP JP12263976A patent/JPS5347708A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5347708A (en) | 1978-04-28 |