NL6613954A - - Google Patents
Info
- Publication number
- NL6613954A NL6613954A NL6613954A NL6613954A NL6613954A NL 6613954 A NL6613954 A NL 6613954A NL 6613954 A NL6613954 A NL 6613954A NL 6613954 A NL6613954 A NL 6613954A NL 6613954 A NL6613954 A NL 6613954A
- Authority
- NL
- Netherlands
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
- H04Q1/4535—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 with an additional signal transmitted for voice protection
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1965ST024469 DE1265225B (de) | 1965-10-06 | 1965-10-06 | Verfahren und Schaltungsanordnung zur simultanen UEbertragung von Steuersignalen ueber anderweitig belegte Fernmeldeleitungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6613954A true NL6613954A (xx) | 1967-04-07 |
Family
ID=7460138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6613954A NL6613954A (xx) | 1965-10-06 | 1966-10-04 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1265225B (xx) |
| GB (1) | GB1153455A (xx) |
| NL (1) | NL6613954A (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3405013C2 (de) * | 1984-02-13 | 1986-01-09 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung für den Kennzeichenaustausch zwischen als Haupt- und Unteranlagen zusammengeschalteten Fernsprechvermittlungsanlagen |
| DE3418458A1 (de) * | 1984-02-13 | 1985-11-21 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung fuer den kennzeichenaustausch zwischen als haupt- und unteranlagen zusammengeschalteten fernsprechvermittlungsanlagen |
| DE3411205C2 (de) * | 1984-03-27 | 1986-12-11 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Verfahren für den Kennzeichenaustausch zwischen als Haupt- und Unteranlagen zusammengeschalteten Fernsprechvermittlungsanlagen |
-
1965
- 1965-10-06 DE DE1965ST024469 patent/DE1265225B/de not_active Withdrawn
-
1966
- 1966-09-30 GB GB4382366A patent/GB1153455A/en not_active Expired
- 1966-10-04 NL NL6613954A patent/NL6613954A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1153455A (en) | 1969-05-29 |
| DE1265225B (de) | 1968-04-04 |