JPS5210607A - Extension mutual connection system - Google Patents
Extension mutual connection systemInfo
- Publication number
- JPS5210607A JPS5210607A JP8712075A JP8712075A JPS5210607A JP S5210607 A JPS5210607 A JP S5210607A JP 8712075 A JP8712075 A JP 8712075A JP 8712075 A JP8712075 A JP 8712075A JP S5210607 A JPS5210607 A JP S5210607A
- Authority
- JP
- Japan
- Prior art keywords
- connection system
- mutual connection
- extension mutual
- extension
- terms
- 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
Abstract
PURPOSE:To make a single channel of the extension mutual communication trunk in order to half the number of output terminals, thereby increasing their number in terms of practical effect and ensuring economical switch board operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8712075A JPS5210607A (en) | 1975-07-16 | 1975-07-16 | Extension mutual connection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8712075A JPS5210607A (en) | 1975-07-16 | 1975-07-16 | Extension mutual connection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5210607A true JPS5210607A (en) | 1977-01-27 |
Family
ID=13906085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8712075A Pending JPS5210607A (en) | 1975-07-16 | 1975-07-16 | Extension mutual connection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5210607A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60143081A (en) * | 1983-12-29 | 1985-07-29 | Nec Home Electronics Ltd | Electronic still camera system |
-
1975
- 1975-07-16 JP JP8712075A patent/JPS5210607A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60143081A (en) * | 1983-12-29 | 1985-07-29 | Nec Home Electronics Ltd | Electronic still camera system |
JPS6360595B2 (en) * | 1983-12-29 | 1988-11-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5210607A (en) | Extension mutual connection system | |
JPS5213706A (en) | Key telephone system | |
PT65278B (en) | Improvements in or relating to t.d.m. telecommunications switching systems | |
JPS5232205A (en) | Circuit connecting equipment | |
JPS5333509A (en) | Offering in-trunk | |
ATA13676A (en) | CIRCUIT ARRANGEMENT FOR REMOTE COMMUNICATION SYSTEMS, IN PARTICULAR TELEPHONE SWITCH SYSTEMS | |
JPS5224415A (en) | Communication system | |
JPS5249704A (en) | Time division switchboard channel control mechanism | |
JPS5227209A (en) | Pcm group transmission relay system | |
JPS52104008A (en) | Connecting method of button telephone apparatus | |
JPS5236902A (en) | Control system for inter-unit mutual communication | |
JPS522305A (en) | Data communicating system | |
SE408988B (en) | WAY TO OPERATE THE CONTROL DEVICE IN A COMMUNICATION STATION, SEPARATE TELEPHONE COMMUNICATION STATION | |
JPS5227203A (en) | Electric striction-type coordinate selector | |
JPS51142649A (en) | Enclosed switchboard | |
JPS5437622A (en) | Time division digital communication unit | |
JPS5232211A (en) | Electronic switching network | |
JPS51132014A (en) | Transmission electric line | |
JPS51125839A (en) | Enclosed switchboard | |
JPS5384455A (en) | Count setting device | |
JPS5274201A (en) | Display control circuit for key telephone system | |
JPS52104A (en) | Control circuit for telephone channel connecting device | |
JPS5283108A (en) | Driving system | |
JPS5333001A (en) | Inter-selective-call receiver circuit | |
JPS5394711A (en) | Circuit supervisory system |