GB1529341A - Digital switching centre - Google Patents
Digital switching centreInfo
- Publication number
- GB1529341A GB1529341A GB152175A GB152175A GB1529341A GB 1529341 A GB1529341 A GB 1529341A GB 152175 A GB152175 A GB 152175A GB 152175 A GB152175 A GB 152175A GB 1529341 A GB1529341 A GB 1529341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- buffer store
- store
- jan
- receiver
- time
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Abstract
1529341 Multiplex pulse code signalling POST OFFICE 12 Jan 1976 [14 Jan 1975] 1521/75 Heading H4M A TDM exchange includes a receiver on each incoming 32 channel PCM highway comprising a regenerator, 30, a series to parallel converter 33, a buffer store 300 of capacity 8 bits, and a main store 13 having an 8 bit location for each of the 32 time channels, and the receiver is arranged such that information is transferred into buffer store 300 under the control of clock pulses derived from the incoming bit stream whereas transfer from the buffer store 300 to the main store 13 takes place under the control of one of two exchange clock pulse trains P1, P2, there being means comprising unit 306 for switching from one pulse train to the other to prevent simultaneous reading and writing operations of the buffer store 300. The pulse trains P1, P2 are separated in time by a period of half a time slot. The stores 13 of different highways may be interconnected by a space switch in the manner disclosed in Specification No. 1,398,519.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB152175A GB1529341A (en) | 1976-01-12 | 1976-01-12 | Digital switching centre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB152175A GB1529341A (en) | 1976-01-12 | 1976-01-12 | Digital switching centre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1529341A true GB1529341A (en) | 1978-10-18 |
Family
ID=9723432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB152175A Expired GB1529341A (en) | 1976-01-12 | 1976-01-12 | Digital switching centre |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1529341A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2312162A1 (en) * | 1975-05-19 | 1976-12-17 | Post Office | DIGITAL SWITCHING CENTER |
| EP0066653A1 (en) * | 1981-06-04 | 1982-12-15 | Siemens Aktiengesellschaft | Circuit arrangement for time-division-multiplex telecommunication exchanges, particularly for PCM telephone exchanges with time-division highways of which the time channels are used partially for the transmission of data and partially for the transmission of signalling information |
-
1976
- 1976-01-12 GB GB152175A patent/GB1529341A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2312162A1 (en) * | 1975-05-19 | 1976-12-17 | Post Office | DIGITAL SWITCHING CENTER |
| EP0066653A1 (en) * | 1981-06-04 | 1982-12-15 | Siemens Aktiengesellschaft | Circuit arrangement for time-division-multiplex telecommunication exchanges, particularly for PCM telephone exchanges with time-division highways of which the time channels are used partially for the transmission of data and partially for the transmission of signalling information |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |