IT1228816B - Digital telephone system with distributed processing and switching - Google Patents
Digital telephone system with distributed processing and switchingInfo
- Publication number
- IT1228816B IT1228816B IT8919865A IT1986589A IT1228816B IT 1228816 B IT1228816 B IT 1228816B IT 8919865 A IT8919865 A IT 8919865A IT 1986589 A IT1986589 A IT 1986589A IT 1228816 B IT1228816 B IT 1228816B
- Authority
- IT
- Italy
- Prior art keywords
- interface circuits
- resident
- bus
- switching
- telephone system
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 abstract 3
- 230000007175 bidirectional communication Effects 0.000 abstract 1
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
The system includes a universal backplane bus (1) and a number of interface circuits (3,5) connected to remote peripherals, for effecting bidirectional communication of information signals between the remote peripherals via the bus, as well as the exchange of message signals between local control circuit (23A,B) resident on individual ones of the interface circuits. Each inteface circuit is further comprised of a digital time and space switch DX for transmitting the information signals in PCM format between the remote peripherals and the universal bus, under control of the control circuitry resident on respective ones of the interface circuits. An HDLC controller (25A,B) is provided on each of the interface circuits for controlling the exchange of message signals between the local control circuit resident on the respective ones of the interface circuits.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8919865A IT1228816B (en) | 1989-03-22 | 1989-03-22 | Digital telephone system with distributed processing and switching |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8919865A IT1228816B (en) | 1989-03-22 | 1989-03-22 | Digital telephone system with distributed processing and switching |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8919865A0 IT8919865A0 (en) | 1989-03-22 |
IT1228816B true IT1228816B (en) | 1991-07-04 |
Family
ID=11161903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8919865A IT1228816B (en) | 1989-03-22 | 1989-03-22 | Digital telephone system with distributed processing and switching |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1228816B (en) |
-
1989
- 1989-03-22 IT IT8919865A patent/IT1228816B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8919865A0 (en) | 1989-03-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970328 |