GB413054A - Improvements in and relating to telephone installations - Google Patents
Improvements in and relating to telephone installationsInfo
- Publication number
- GB413054A GB413054A GB4996/33A GB499633A GB413054A GB 413054 A GB413054 A GB 413054A GB 4996/33 A GB4996/33 A GB 4996/33A GB 499633 A GB499633 A GB 499633A GB 413054 A GB413054 A GB 413054A
- Authority
- GB
- United Kingdom
- Prior art keywords
- group
- groups
- trunks
- finders
- lines
- 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
- H04Q3/64—Distributing or queueing
- H04Q3/68—Grouping or interlacing selector groups or stages
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Keying Circuit Devices (AREA)
- Structure Of Telephone Exchanges (AREA)
- Telephonic Communication Services (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
413,054. Automatic exchange systems. MERK, F., and FULD & CO. TELEPHON-UND TELEGRAPHENWERKE AKT.-GES., H., 136, Mainzerlandstrasse, Frankfort-on-Main, Germany. Feb. 17, 1933, No. 4996. Convention date, Feb. 17, 1932. [Class 40 (iv).] In a multiplying scheme primarily for line switches and call finders, the subscribers' lines are divided into groups A, B, C .... , while the trunks to which they are to be connected are divided into groups a, b, c, ...... , and each group of trunks is arranged to be first choice to the correspondingly lettered group of lines and second choice to another group of lines, so that each switch has access to two partial multiples, the combination being different for each group of switches. Fig. 3 shows an arrangement in which the groups of trunks a, b, c ... terminate in call-finders, denoted by arrow-heads, each having access to two adjacent groups of subscribers' lines. Calls in group B for example are extended normally by the finders of group b, but when all these are in use, the finders of group c are brought into service. Similarly when all the finders of group c are in use, further calls in group C may be dealt with by the finders of group d. Fig. 3<a> shows the corresponding arrangement in which the groups of lines A, B, C, .... terminate in line switches, denoted by arrow-heads, each having access to two adjacent groups of trunks. When the groups of subscribers' lines are sub-divided into sub-groups as shown in these arrangements, the modifications shown in Figs. 4, 4<a> may be adopted whereby the excess calls in different sub-groups of a group are extended over different groups of trunks. When all the trunks of group b are in use for example, further calls in the sub-groups B1-4 of group B are extended respectively over the trunks of groups c, d, e, f. When the arrangement of Fig. 4 is adopted for numerical final selectors, if the final selectors normally serving the wanted group are all in use, it is necessary for the penultimate selector to receive the tens digit in order to select a final selector serving the appropriate sub-group, the tens digit then being repeated thereto.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE413054X | 1932-02-17 | ||
| DEM123029D DE635919C (en) | 1932-02-17 | 1933-02-26 | Circuit arrangement for telephone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB413054A true GB413054A (en) | 1934-07-12 |
Family
ID=25907313
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4996/33A Expired GB413054A (en) | 1932-02-17 | 1933-02-17 | Improvements in and relating to telephone installations |
| GB5891/34A Expired GB419189A (en) | 1932-02-17 | 1934-02-22 | Improvements in and relating to telephone installations |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5891/34A Expired GB419189A (en) | 1932-02-17 | 1934-02-22 | Improvements in and relating to telephone installations |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US1972199A (en) |
| BE (1) | BE394383A (en) |
| DE (3) | DE606205C (en) |
| FR (2) | FR750800A (en) |
| GB (2) | GB413054A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE924758C (en) * | 1943-08-04 | 1955-03-07 | Siemens Ag | Circuit arrangement for making end connections via through connection lines in telephone systems with dialer operation |
| NL164979B (en) * | 1951-10-27 | Kureha Chemical Ind Co Ltd | PUSH BUTTON SWITCH PANEL WITH PIEZO ELECTRICAL UNIT ELEMENTS. | |
| NL94753C (en) * | 1952-03-21 | |||
| US2866853A (en) * | 1953-11-18 | 1958-12-30 | Gen Telephone Lab Inc | Rotary finder with graded multiple |
| DE2724154A1 (en) * | 1977-05-27 | 1978-11-30 | Dirr Josef | Telephone PBX operating when called subscriber answers - transmits marked position of central selector to individual selector |
-
0
- BE BE394383D patent/BE394383A/xx unknown
-
1932
- 1932-02-18 DE DEM118781D patent/DE606205C/en not_active Expired
-
1933
- 1933-02-01 DE DEM122751D patent/DE618575C/en not_active Expired
- 1933-02-14 US US656731A patent/US1972199A/en not_active Expired - Lifetime
- 1933-02-14 FR FR750800D patent/FR750800A/en not_active Expired
- 1933-02-17 GB GB4996/33A patent/GB413054A/en not_active Expired
- 1933-02-26 DE DEM123029D patent/DE635919C/en not_active Expired
-
1934
- 1934-02-22 GB GB5891/34A patent/GB419189A/en not_active Expired
- 1934-02-24 US US712825A patent/US1999104A/en not_active Expired - Lifetime
- 1934-02-26 FR FR44932D patent/FR44932E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB419189A (en) | 1934-11-07 |
| US1972199A (en) | 1934-09-04 |
| DE618575C (en) | 1935-09-13 |
| DE635919C (en) | 1936-10-01 |
| BE394383A (en) | |
| FR44932E (en) | 1935-05-01 |
| FR750800A (en) | 1933-08-18 |
| US1999104A (en) | 1935-04-23 |
| DE606205C (en) | 1934-11-29 |
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