JPS57193197A - Voice relaying and exchanging system - Google Patents
Voice relaying and exchanging systemInfo
- Publication number
- JPS57193197A JPS57193197A JP56077798A JP7779881A JPS57193197A JP S57193197 A JPS57193197 A JP S57193197A JP 56077798 A JP56077798 A JP 56077798A JP 7779881 A JP7779881 A JP 7779881A JP S57193197 A JPS57193197 A JP S57193197A
- Authority
- JP
- Japan
- Prior art keywords
- station
- signal
- exchange
- voice
- vocoders
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
PURPOSE:To prevent the deterioration of the voice quality which is due to the repetition of the demodulation, the exchange and the modulation respectively and to extend the system, by connecting the voice modulating signals between the vocoders of the intermediate exchange stations and converting the modulating signal into the demodulation signal at an incoming station and by the information of the incoming dial signal, etc. CONSTITUTION:The exchange stations 22 and 24 are connected via a relaying exchage station 23. When an outgoing is given to the station 24 from the station 22, the information of the dial signal, etc. which is given from a calling telephone TEL1 is fed to an exchange station 23 via a switchboard 30 and a trunk line 25 and then relayed and exchanged by a switchboard 31 to be fed to a switchboard 32 of an exchange station 24 via a trunk line 26. On the other hand, the vocoders 27-29 are connected to the switchboards 30-32 respectively of the stations 22, 23 and 24, and these vocoders are connected to each other via a trunk line 21. Then the voice modulating signals are connected among the vocoders 27-29. The modulating signal is changed to the demodulating signal at each incoming station by the information of the dial signal, etc. Thus the deterioration of the voice signal is prevented, and the system can be easily extended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56077798A JPS57193197A (en) | 1981-05-22 | 1981-05-22 | Voice relaying and exchanging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56077798A JPS57193197A (en) | 1981-05-22 | 1981-05-22 | Voice relaying and exchanging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57193197A true JPS57193197A (en) | 1982-11-27 |
Family
ID=13644011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56077798A Pending JPS57193197A (en) | 1981-05-22 | 1981-05-22 | Voice relaying and exchanging system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57193197A (en) |
-
1981
- 1981-05-22 JP JP56077798A patent/JPS57193197A/en active Pending
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