GB1339035A - Centrally controlled telecommunications exchange systems - Google Patents
Centrally controlled telecommunications exchange systemsInfo
- Publication number
- GB1339035A GB1339035A GB1212571A GB1212571A GB1339035A GB 1339035 A GB1339035 A GB 1339035A GB 1212571 A GB1212571 A GB 1212571A GB 1212571 A GB1212571 A GB 1212571A GB 1339035 A GB1339035 A GB 1339035A
- Authority
- GB
- United Kingdom
- Prior art keywords
- subscriber
- reserved
- switches
- call
- connection
- 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
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
Abstract
1339035 Automatic exchange equipment SIEMENS AG 29 April 1971 [30 April 1970] 12125/71 Heading H4K In a centrally controlled telephone exchange a store is provided which stores the information regarding the busy/free state of path sections within the exchange so that in the event of a connection being sought to an engaged subscriber, the connecting path sections are reserved by being buried in the store until such later time when the connection can be made. This operation is stated to be especially useful in the case of a call-back connection where subscriber A is connected to a remote subscriber C through a trunk AU and switches 1, 6, 11. Subscriber A uses key t to set up an interim call to subscriber B using the link HU and switches 2, 7, 13, 14, 9, 4. Simultaneously a path between subscriber B and remote subscriber C using switches 3, 8, 12 is reserved and this information is stored in store SP. If this path could not be reserved then subscriber A would have received busy tone when asking for the interim or call-back connection. The arrangement also allows a caller to camp on a busy subscriber.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702021342 DE2021342C (en) | 1970-04-30 | Procedure for handling connection requests in a centrally controlled switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1339035A true GB1339035A (en) | 1973-11-28 |
Family
ID=5769961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1212571A Expired GB1339035A (en) | 1970-04-30 | 1971-04-29 | Centrally controlled telecommunications exchange systems |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT308842B (en) |
| BE (1) | BE766561A (en) |
| CH (1) | CH530142A (en) |
| FR (1) | FR2090845A5 (en) |
| GB (1) | GB1339035A (en) |
| LU (1) | LU63072A1 (en) |
| NL (1) | NL7105928A (en) |
-
1971
- 1971-04-07 CH CH510571A patent/CH530142A/en not_active IP Right Cessation
- 1971-04-16 AT AT325271A patent/AT308842B/en not_active IP Right Cessation
- 1971-04-28 FR FR7115120A patent/FR2090845A5/fr not_active Expired
- 1971-04-28 LU LU63072D patent/LU63072A1/xx unknown
- 1971-04-29 GB GB1212571A patent/GB1339035A/en not_active Expired
- 1971-04-29 NL NL7105928A patent/NL7105928A/xx not_active Application Discontinuation
- 1971-04-30 BE BE766561A patent/BE766561A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2090845A5 (en) | 1972-01-14 |
| BE766561A (en) | 1971-11-03 |
| LU63072A1 (en) | 1971-08-27 |
| NL7105928A (en) | 1971-11-02 |
| DE2021342B2 (en) | 1972-04-13 |
| CH530142A (en) | 1972-10-31 |
| AT308842B (en) | 1973-07-25 |
| DE2021342A1 (en) | 1971-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |