ES384718A2 - Improvements in or relating to telecommunication exchanges - Google Patents
Improvements in or relating to telecommunication exchangesInfo
- Publication number
- ES384718A2 ES384718A2 ES384718A ES384718A ES384718A2 ES 384718 A2 ES384718 A2 ES 384718A2 ES 384718 A ES384718 A ES 384718A ES 384718 A ES384718 A ES 384718A ES 384718 A2 ES384718 A2 ES 384718A2
- Authority
- ES
- Spain
- Prior art keywords
- beams
- exchange
- conference
- multiplex
- central
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
- H04M3/569—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants using the instant speaker's algorithm
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
Improvements introduced in main patent number 370,833 by an automatic telephone exchange in which communication connections are established in time division multiplex (TDM) form, these being a plurality of multiplex incoming beams and multiplex outgoing beams to and from the central, in which at least one beam has been provided that crosses the central, interconnecting the or each one of the beams that cross the central a plurality of incoming beams and a plurality of outgoing beams, the arrangement being such that each of the incoming beams have access to each one of said outgoing beams, in which a conference circuit is provided for the establishment of conference calls, with three or more of the subscriber lines served by the exchange intervening in each such call, wherein said conference circuit is connected to the exchange as an input in a manner similar to that of one of said multiplex beams and has access via switching means to a plurality of TDM channels in the or each of said beams crossing the exchange, said channels being reserved for the use of conference calls, in which a conference call is established using one or more of said reserved channels to which said conference circuit and said lecturers are connected, and in which the output of the conference circuit is switched from its input to the exchange to all lecturers except the lecturer who is speaking. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5162969A GB1280045A (en) | 1969-10-21 | 1969-10-21 | Improvements in or relating to telecommunication exchanges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES384718A2 true ES384718A2 (en) | 1973-03-16 |
Family
ID=10460780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES384718A Expired ES384718A2 (en) | 1969-10-21 | 1970-10-20 | Improvements in or relating to telecommunication exchanges |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE757766A (en) |
| CA (1) | CA938706A (en) |
| ES (1) | ES384718A2 (en) |
| FR (1) | FR2077510A6 (en) |
| GB (1) | GB1280045A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7528755B2 (en) | 2007-09-06 | 2009-05-05 | Infineon Technologies Ag | Sigma-delta modulator for operating sensors |
-
0
- BE BE757766D patent/BE757766A/en unknown
-
1969
- 1969-10-21 GB GB5162969A patent/GB1280045A/en not_active Expired
-
1970
- 1970-10-07 CA CA095046A patent/CA938706A/en not_active Expired
- 1970-10-20 ES ES384718A patent/ES384718A2/en not_active Expired
- 1970-10-21 FR FR7037987A patent/FR2077510A6/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2077510A6 (en) | 1971-10-29 |
| GB1280045A (en) | 1972-07-05 |
| CA938706A (en) | 1973-12-18 |
| BE757766A (en) | 1971-04-21 |
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