GB1417300A - Pmc time division multiplex telecommunications networks - Google Patents
Pmc time division multiplex telecommunications networksInfo
- Publication number
- GB1417300A GB1417300A GB4395873A GB4395873A GB1417300A GB 1417300 A GB1417300 A GB 1417300A GB 4395873 A GB4395873 A GB 4395873A GB 4395873 A GB4395873 A GB 4395873A GB 1417300 A GB1417300 A GB 1417300A
- Authority
- GB
- United Kingdom
- Prior art keywords
- highway
- channels
- time
- transferred
- highways
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1623—Plesiochronous digital hierarchy [PDH]
- H04J3/1647—Subrate or multislot multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Time-Division Multiplex Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
1417300 Automatic exchange systems SIEMENS AG 19 Sept 1973 [22 Sept 1972] 43958/73 Heading H4K In a PCM TDM inter-highway switching system, broadband or high bit rate signals occupying a number N of time channels (not necessarily consecutive in time) on an incoming highway are transferred to the same number N of time channels (usually exhibiting a different time spacing) on an outgoing highway, the time sequence order is maintained and signals from the first of said number of channels on the incoming highway are transferred to the first channel of the number on the outgoing highway that follows a total of N or N+ 1 channels on the two highways. The Figure shows two frames on each of two synchronized highways A and B. A broadband signal occupying eight channels is transferred from highway A (slots a 1 to a s ) to highway B (slots b 1 to b 8 ). The signal from slot a 1 in each frame is transferred to a time slot b6 on highway B that is the first to follow a total of eight (this being the number of channels) time slots a 1 to a 3 and b 1 to 6 5 since the beginning of the frame. If the required number of channels is not free on a single outgoing highway the channels may be divided into groups which are distributed successively over a plurality of highways extending in the same direction, the channels in each group being transmitted on its highway in the manner set out above and combined cyclically on a single highway to restore the sequence at the receiving end. The object of the invention is to allow the sequence order in each channel to be preserved and to eliminate any need to store codes for more than one frame.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722246534 DE2246534C2 (en) | 1972-09-22 | 1972-09-22 | PCM time division multiplex switching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1417300A true GB1417300A (en) | 1975-12-10 |
Family
ID=5857064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4395873A Expired GB1417300A (en) | 1972-09-22 | 1973-09-19 | Pmc time division multiplex telecommunications networks |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5338122B2 (en) |
| AT (1) | AT323816B (en) |
| BE (1) | BE805167A (en) |
| CH (1) | CH565493A5 (en) |
| DE (1) | DE2246534C2 (en) |
| DK (1) | DK139920C (en) |
| FR (1) | FR2200719B1 (en) |
| GB (1) | GB1417300A (en) |
| IT (1) | IT993282B (en) |
| LU (1) | LU68459A1 (en) |
| NL (1) | NL167292C (en) |
| SE (1) | SE393915B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467471A (en) * | 1980-12-03 | 1984-08-21 | Siemens Aktiengesellschaft | Circuit arrangement for time-division multiplex telecommunication switching systems for multi-channel connections |
| GB2283639A (en) * | 1993-10-22 | 1995-05-10 | Mitel Corp | Time slot assigner for communication system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6115265A (en) * | 1984-06-27 | 1986-01-23 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Switching system |
| JPS62200118A (en) * | 1986-02-25 | 1987-09-03 | Matsushita Electric Works Ltd | Floor heating panel |
-
1972
- 1972-09-22 DE DE19722246534 patent/DE2246534C2/en not_active Expired
-
1973
- 1973-07-05 CH CH982673A patent/CH565493A5/xx not_active IP Right Cessation
- 1973-07-26 AT AT659473A patent/AT323816B/en not_active IP Right Cessation
- 1973-09-18 IT IT2903373A patent/IT993282B/en active
- 1973-09-19 GB GB4395873A patent/GB1417300A/en not_active Expired
- 1973-09-20 LU LU68459D patent/LU68459A1/xx unknown
- 1973-09-20 FR FR7333755A patent/FR2200719B1/fr not_active Expired
- 1973-09-20 NL NL7312991A patent/NL167292C/en not_active IP Right Cessation
- 1973-09-20 DK DK515573A patent/DK139920C/en not_active IP Right Cessation
- 1973-09-20 JP JP10646273A patent/JPS5338122B2/ja not_active Expired
- 1973-09-21 BE BE135915A patent/BE805167A/en unknown
- 1973-09-24 SE SE7312998A patent/SE393915B/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467471A (en) * | 1980-12-03 | 1984-08-21 | Siemens Aktiengesellschaft | Circuit arrangement for time-division multiplex telecommunication switching systems for multi-channel connections |
| GB2283639A (en) * | 1993-10-22 | 1995-05-10 | Mitel Corp | Time slot assigner for communication system |
| GB2283639B (en) * | 1993-10-22 | 1998-08-26 | Mitel Corp | Time slot assigner for communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2246534C2 (en) | 1974-11-14 |
| DE2246534A1 (en) | 1974-04-04 |
| DK139920B (en) | 1979-05-14 |
| JPS5338122B2 (en) | 1978-10-13 |
| LU68459A1 (en) | 1973-11-26 |
| FR2200719B1 (en) | 1978-10-27 |
| DK139920C (en) | 1979-10-15 |
| IT993282B (en) | 1975-09-30 |
| DE2246534B1 (en) | 1974-04-04 |
| AT323816B (en) | 1975-07-25 |
| JPS4971803A (en) | 1974-07-11 |
| BE805167A (en) | 1974-03-21 |
| NL167292C (en) | 1981-11-16 |
| NL7312991A (en) | 1974-03-26 |
| FR2200719A1 (en) | 1974-04-19 |
| CH565493A5 (en) | 1975-08-15 |
| NL167292B (en) | 1981-06-16 |
| SE393915B (en) | 1977-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |