JPS55136758A - Restoration system for communication line - Google Patents
Restoration system for communication lineInfo
- Publication number
- JPS55136758A JPS55136758A JP4400879A JP4400879A JPS55136758A JP S55136758 A JPS55136758 A JP S55136758A JP 4400879 A JP4400879 A JP 4400879A JP 4400879 A JP4400879 A JP 4400879A JP S55136758 A JPS55136758 A JP S55136758A
- Authority
- JP
- Japan
- Prior art keywords
- tdm
- relay
- contact
- tandem
- station
- 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
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Meter Arrangements (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
PURPOSE:To restore the line of multi-stage relay only by the transmission station, by giving the monitor circuit for communication time limit and the release means making ineffective it at the outgoing trunk of the exchanger performing tandem relay. CONSTITUTION:The tandem relay TDM of a tendem station is operated in the path of T0 terminal -tc<o> contact-relay of TDM-cell from the marker via the trunk block connector and holds in the path of ground-b<2> contact-tdm<1> contact-TDM relay-cell. When this TDM relay is operative, since the time monitor circuit of communication time limit is cut off with the tdm<0> contact, the restoration of line is not made at the tandem station.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4400879A JPS55136758A (en) | 1979-04-11 | 1979-04-11 | Restoration system for communication line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4400879A JPS55136758A (en) | 1979-04-11 | 1979-04-11 | Restoration system for communication line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55136758A true JPS55136758A (en) | 1980-10-24 |
Family
ID=12679663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4400879A Pending JPS55136758A (en) | 1979-04-11 | 1979-04-11 | Restoration system for communication line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55136758A (en) |
-
1979
- 1979-04-11 JP JP4400879A patent/JPS55136758A/en active Pending
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