GB1455791A - Tdm digital telecommunications exchange systems - Google Patents
Tdm digital telecommunications exchange systemsInfo
- Publication number
- GB1455791A GB1455791A GB769274A GB769274A GB1455791A GB 1455791 A GB1455791 A GB 1455791A GB 769274 A GB769274 A GB 769274A GB 769274 A GB769274 A GB 769274A GB 1455791 A GB1455791 A GB 1455791A
- Authority
- GB
- United Kingdom
- Prior art keywords
- address
- stores
- circulating
- time
- time slot
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
1455791 Automatic exchange systems SIEMENS AG 20 Feb 1974 [22 Feb 1973] 7692/74 Heading H4K A four wire time-space-time t.d.m. switching system, which has means for indicating double connections in the space stage substantially as described in Specification 1,453,687, is further provided with means for indicating double connections in the time stages. The circulating stores HSPV1-15 associated with the addressing of the speech stores of the incoming and outgoing highways KL1-KL15 and GL1-GL15 respectively are each coupled to a respective comparator V1-V15 which each have another input connected to an address generator AG. The address generator AG is stopped at the beginning of each frame and produces for one frame period the address of one time slot. If the time slot address is present in one of the circulating address stores more than once, one of the counters Z1-Z15 coupled to the output of comparators V1-V15 produces an output to indicate that the time slot address is stored at least twice in the same circulating store. A separate address generator may be provided for each comparator. The circulating stores HSPV1-15 each control the speech stores of a GO and RETURN highway pair.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732308866 DE2308866C2 (en) | 1973-02-22 | 1973-02-22 | Circuit arrangement for the detection of double connections in time-division multiplex digital telecommunications switching systems, in particular PCM telephone switching systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1455791A true GB1455791A (en) | 1976-11-17 |
Family
ID=5872778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB769274A Expired GB1455791A (en) | 1973-02-22 | 1974-02-20 | Tdm digital telecommunications exchange systems |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT329119B (en) |
| BE (1) | BE811465A (en) |
| CH (1) | CH564895A5 (en) |
| DE (1) | DE2308866C2 (en) |
| FR (1) | FR2219597B1 (en) |
| GB (1) | GB1455791A (en) |
| IT (1) | IT1004329B (en) |
| LU (1) | LU69435A1 (en) |
| NL (1) | NL7402270A (en) |
| SE (1) | SE388744B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656626A (en) * | 1984-12-14 | 1987-04-07 | Itt Corporation | Apparatus and method for providing dynamically assigned switch paths |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1298579B (en) * | 1967-09-15 | 1969-07-03 | Siemens Ag | Circuit arrangement for avoiding double connections in time division multiplex telecommunications, in particular telephone switching systems |
-
1973
- 1973-02-22 DE DE19732308866 patent/DE2308866C2/en not_active Expired
-
1974
- 1974-01-29 AT AT70974A patent/AT329119B/en not_active IP Right Cessation
- 1974-02-04 CH CH148374A patent/CH564895A5/xx not_active IP Right Cessation
- 1974-02-18 FR FR7405384A patent/FR2219597B1/fr not_active Expired
- 1974-02-19 NL NL7402270A patent/NL7402270A/xx not_active Application Discontinuation
- 1974-02-20 LU LU69435D patent/LU69435A1/xx unknown
- 1974-02-20 GB GB769274A patent/GB1455791A/en not_active Expired
- 1974-02-20 IT IT4848074A patent/IT1004329B/en active
- 1974-02-22 BE BE141295A patent/BE811465A/en unknown
- 1974-02-22 SE SE7402424A patent/SE388744B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT329119B (en) | 1976-04-26 |
| SE388744B (en) | 1976-10-11 |
| LU69435A1 (en) | 1974-05-29 |
| DE2308866B1 (en) | 1974-05-09 |
| IT1004329B (en) | 1976-07-10 |
| FR2219597A1 (en) | 1974-09-20 |
| FR2219597B1 (en) | 1979-01-26 |
| DE2308866C2 (en) | 1974-12-12 |
| NL7402270A (en) | 1974-08-26 |
| BE811465A (en) | 1974-08-22 |
| ATA70974A (en) | 1975-07-15 |
| CH564895A5 (en) | 1975-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |