JPS544510A - Combined trunk system between two wires and four wires - Google Patents
Combined trunk system between two wires and four wiresInfo
- Publication number
- JPS544510A JPS544510A JP6948777A JP6948777A JPS544510A JP S544510 A JPS544510 A JP S544510A JP 6948777 A JP6948777 A JP 6948777A JP 6948777 A JP6948777 A JP 6948777A JP S544510 A JPS544510 A JP S544510A
- Authority
- JP
- Japan
- Prior art keywords
- wires
- trunk system
- combined trunk
- program control
- wire trunk
- 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
Landscapes
- Interface Circuits In Exchanges (AREA)
Abstract
PURPOSE: To reduce the processing capacity of a relay processor and to simplify program control,by enabling an information detection realy to detect the connection via network only when connecting one four-wire trunk to another four-wire trunk in a program control switching unit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6948777A JPS544510A (en) | 1977-06-14 | 1977-06-14 | Combined trunk system between two wires and four wires |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6948777A JPS544510A (en) | 1977-06-14 | 1977-06-14 | Combined trunk system between two wires and four wires |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS544510A true JPS544510A (en) | 1979-01-13 |
Family
ID=13404101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6948777A Pending JPS544510A (en) | 1977-06-14 | 1977-06-14 | Combined trunk system between two wires and four wires |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS544510A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4598172A (en) * | 1983-01-19 | 1986-07-01 | Telefonaktiebolaget Lm Ericsson | Telecommunication terminal |
US5414763A (en) * | 1991-04-09 | 1995-05-09 | Canon Kabushiki Kaisha | Apparatus and method for providing echo suppression to a plurality of telephones |
-
1977
- 1977-06-14 JP JP6948777A patent/JPS544510A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4598172A (en) * | 1983-01-19 | 1986-07-01 | Telefonaktiebolaget Lm Ericsson | Telecommunication terminal |
US5414763A (en) * | 1991-04-09 | 1995-05-09 | Canon Kabushiki Kaisha | Apparatus and method for providing echo suppression to a plurality of telephones |
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