NL27090C - - Google Patents
Info
- Publication number
- NL27090C NL27090C NL27090DA NL27090C NL 27090 C NL27090 C NL 27090C NL 27090D A NL27090D A NL 27090DA NL 27090 C NL27090 C NL 27090C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L19/00—Apparatus or local circuits for step-by-step systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Prepayment Telephone Systems (AREA)
- Interface Circuits In Exchanges (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT310029X | 1928-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL27090C true NL27090C (zh) |
Family
ID=3671324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL27090D NL27090C (zh) | 1928-04-21 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1827962A (zh) |
| BE (1) | BE358479A (zh) |
| DE (1) | DE540138C (zh) |
| GB (1) | GB310029A (zh) |
| NL (1) | NL27090C (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE761948C (de) * | 1940-04-10 | 1954-02-08 | Siemens & Halske A G | Durch Impulskombinationen, insbesondere telegrafische Impulskombinationen, gesteuerte Waehlereinrichtung zur Verbindungsherstellung |
-
0
- BE BE358479D patent/BE358479A/xx unknown
- NL NL27090D patent/NL27090C/xx active
-
1928
- 1928-11-17 US US320026A patent/US1827962A/en not_active Expired - Lifetime
-
1929
- 1929-01-29 DE DEB141637D patent/DE540138C/de not_active Expired
- 1929-04-02 GB GB10226/29A patent/GB310029A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE358479A (zh) | |
| US1827962A (en) | 1931-10-20 |
| GB310029A (en) | 1930-07-02 |
| DE540138C (de) | 1931-12-08 |