GB1402826A - Pcm tdm telecommunications systems - Google Patents
Pcm tdm telecommunications systemsInfo
- Publication number
- GB1402826A GB1402826A GB990473A GB990473A GB1402826A GB 1402826 A GB1402826 A GB 1402826A GB 990473 A GB990473 A GB 990473A GB 990473 A GB990473 A GB 990473A GB 1402826 A GB1402826 A GB 1402826A
- Authority
- GB
- United Kingdom
- Prior art keywords
- channels
- time
- series
- bit rate
- time channels
- 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)
- Time-Division Multiplex Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
1402826 Automatic exchange systems SIEMENS AG 28 Feb 1973 [29Feb 1972] 9904/73 Heading H4K In a PCM tdm telecommunication system in which high bit rate information signals or code words to be transmitted for wide-band, e.g. video or facsimile connections are distributed over a plurality of equally spaced time channels, time channels for low bit rate information signals outgoing from a tdm exchange are initially selected from a series of equally spaced time channels having a time interval of at least one time slot, until all the channels of said series are seized, any further low bit rate signals being assigned to a further series of time channels having a different time slot interval, until all the time channels of this further series are seized. In an exchange a single intermediate storage cell is used for each connection.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722209649 DE2209649C2 (en) | 1972-02-29 | 1972-02-29 | PCM time division switching |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1402826A true GB1402826A (en) | 1975-08-13 |
Family
ID=5837483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB990473A Expired GB1402826A (en) | 1972-02-29 | 1973-02-28 | Pcm tdm telecommunications systems |
Country Status (9)
Country | Link |
---|---|
AT (1) | AT328518B (en) |
BE (1) | BE796097A (en) |
CH (1) | CH550525A (en) |
DE (1) | DE2209649C2 (en) |
DK (1) | DK138299C (en) |
FR (1) | FR2174080B1 (en) |
GB (1) | GB1402826A (en) |
LU (1) | LU67114A1 (en) |
NL (1) | NL158983B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2261796A (en) * | 1991-11-23 | 1993-05-26 | Dowty Communications Ltd | A TDM parallel communications bus |
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 |
---|---|---|---|---|
DE3675101D1 (en) * | 1985-08-09 | 1990-11-29 | Siemens Ag | CIRCUIT ARRANGEMENT FOR TELECOMMUNICATION SWITCHING SYSTEMS, ESPECIALLY TELEPHONE SWITCHING SYSTEMS, WITH COUPLING PANELS FOR SINGLE AND MULTI-CHANNEL CONNECTIONS. |
CN103407957A (en) * | 2013-08-27 | 2013-11-27 | 苏州琼派瑞特电子科技有限公司 | Joint of down filling pipe |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1279768B (en) * | 1965-05-19 | 1968-10-10 | Siemens Ag | Method and circuit arrangement for increasing the bandwidth of communication channels in time division multiplex switching systems |
FR2087175A5 (en) * | 1970-05-08 | 1971-12-31 | Peron Roger |
-
1972
- 1972-02-29 DE DE19722209649 patent/DE2209649C2/en not_active Expired
-
1973
- 1973-01-19 CH CH75673A patent/CH550525A/en not_active IP Right Cessation
- 1973-02-01 AT AT89373A patent/AT328518B/en not_active IP Right Cessation
- 1973-02-20 NL NL7302339A patent/NL158983B/en unknown
- 1973-02-27 FR FR7306873A patent/FR2174080B1/fr not_active Expired
- 1973-02-27 DK DK104873A patent/DK138299C/en active
- 1973-02-27 LU LU67114D patent/LU67114A1/xx unknown
- 1973-02-28 GB GB990473A patent/GB1402826A/en not_active Expired
- 1973-02-28 BE BE128217A patent/BE796097A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2261796A (en) * | 1991-11-23 | 1993-05-26 | Dowty Communications Ltd | A TDM parallel communications bus |
GB2261796B (en) * | 1991-11-23 | 1995-11-01 | Dowty Communications Ltd | A Communications Bus |
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 |
---|---|
NL158983B (en) | 1978-12-15 |
FR2174080A1 (en) | 1973-10-12 |
LU67114A1 (en) | 1973-05-03 |
DE2209649A1 (en) | 1973-08-23 |
FR2174080B1 (en) | 1976-05-21 |
BE796097A (en) | 1973-08-28 |
CH550525A (en) | 1974-06-14 |
AT328518B (en) | 1976-03-25 |
NL7302339A (en) | 1973-08-31 |
DK138299B (en) | 1978-08-07 |
DK138299C (en) | 1979-03-05 |
ATA89373A (en) | 1975-06-15 |
DE2209649C2 (en) | 1974-04-04 |
DE2209649B1 (en) | 1973-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |