SE314412B - - Google Patents
Info
- Publication number
- SE314412B SE314412B SE746067A SE746067A SE314412B SE 314412 B SE314412 B SE 314412B SE 746067 A SE746067 A SE 746067A SE 746067 A SE746067 A SE 746067A SE 314412 B SE314412 B SE 314412B
- Authority
- SE
- Sweden
- Prior art keywords
- exchange
- subscribers
- data
- exchanges
- calling
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Abstract
1,163,818. Automatic exchange systems. SIEMENS A.G. 26 May, 1967 [27 May, 1966], No. 24559/67. Heading H4K. In a multi-exchange system having some privileged subscribers who retain their personal directory numbers irrespective of the exchange to which they are currently connected, every exchange includes a store containing the number and present location of these subscribers. If one of the subscribers, e.g. 890, moves to another exchange, e.g. E, the location data in the store at his previous exchange D is modified so as to indicate to which of the exchanges he has moved to. A call to this subscriber from another exchange, e.g. A, is initially routed to his previous exchange in accordance with the unmodified stored data at the calling exchange A and tandem exchange C. From D the "change-of-exchange" data is signalled back to C and A which both update their stores correspondingly. The call to the wanted party may be extended over a junction between D and E or the original connection to D may be broken down and a new connection set-up over the direct junction between A and E. The data in other exchanges, e.g. B, is up-dated whenever these exchanges become involved, either as calling or tandem exchanges, in a call to 890. The interexchange junctions may be TDM highways utilizing pulse-phase or pulse-code modulation or they may be frequency division multiplex junctions. Since the special subscribers are not allotted a specific exchange code-at least so far as their (dialled) directory number is concerned-the calling of such a subscriber involves in effect the features of abbreviated dialling and abbreviated interexchange code transmission. It is suggested that the presentexchange-data for all the subscribers to the system may be stored at each exchange. A highly simplified schematic for the logic required in each exchange is depicted in Fig. 2 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES0104045 | 1966-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE314412B true SE314412B (en) | 1969-09-08 |
Family
ID=7525593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE746067A SE314412B (en) | 1966-05-27 | 1967-05-26 |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT284208B (en) |
BE (1) | BE699068A (en) |
CH (1) | CH462254A (en) |
DE (1) | DE1487891B2 (en) |
GB (1) | GB1163818A (en) |
NL (1) | NL161016C (en) |
SE (1) | SE314412B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3036649A1 (en) * | 1980-09-29 | 1982-05-13 | Siemens AG, 1000 Berlin und 8000 München | TELEPHONE SWITCHING NETWORK FOR DIGITAL VOICE TRANSFER |
-
1966
- 1966-05-27 DE DE19661487891 patent/DE1487891B2/en not_active Withdrawn
-
1967
- 1967-05-16 NL NL6706770A patent/NL161016C/en active
- 1967-05-25 CH CH739267A patent/CH462254A/en unknown
- 1967-05-26 GB GB2455967A patent/GB1163818A/en not_active Expired
- 1967-05-26 SE SE746067A patent/SE314412B/xx unknown
- 1967-05-26 BE BE699068D patent/BE699068A/xx unknown
- 1967-05-26 AT AT494067A patent/AT284208B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB1163818A (en) | 1969-09-10 |
DE1487891A1 (en) | 1969-04-03 |
BE699068A (en) | 1967-11-27 |
NL161016B (en) | 1979-07-16 |
NL161016C (en) | 1979-12-17 |
NL6706770A (en) | 1967-11-28 |
DE1487891B2 (en) | 1970-02-05 |
CH462254A (en) | 1968-09-15 |
AT284208B (en) | 1970-09-10 |
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