GB1231418A – – Google Patents
GB1231418A – – Google Patents
Info
Publication number
GB1231418A
GB1231418A
GB1231418DA
GB1231418A
GB 1231418 A
GB1231418 A
GB 1231418A
GB 1231418D A
GB1231418D A
GB 1231418DA
GB 1231418 A
GB1231418 A
GB 1231418A
Authority
GB
United Kingdom
Prior art keywords
address
stage
digits
sub
compartment
Prior art date
1967-11-23
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
Application number
Priority date (The priority date 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 date listed.)
1967-11-23
Filing date
1968-11-22
Publication date
1971-05-12
1968-11-22
Application filed
filed
Critical
1971-05-12
Publication of GB1231418A
publication
Critical
patent/GB1231418A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
H04Q3/54508—Configuration, initialisation
H04Q3/54533—Configuration data, translation, passwords, databases
Abstract
1,231,418. Automatic exchange apparatus. TELEFONAKTIEBOLAGET L. M. ERICSSON. 22 Nov., 1968 [23 Nov., 1967], No. 55626/68. Heading H4K. Translations from directory number to equipment number and vice versa are obtained from groups of storage compartments arranged to be addressed stage by stage in a tree formation, each stage of the tree being a progression from the digits of highest to the digits of lowest significance, the compartments of each stage of the tree except the first and last having addresses of the compartment in the preceding stage contaming the associated preceding digit and also having the addresses of a sub-group of compartments in the following stage containing the associated subsequent digits for which translations exist, the sub-group compartments of the last stage having the address of the associated compartment in the preceding stage and the compartments of the first stage having the addresses of associated sub-groups in the following stage. The invention is described by the example of Fig. 1 in which a directory number 2843 is used to address the storage compartment stages A, B, C, and D, to uniquely identify the equipment AU associated with a storage compartment in the D stage. The first digit 2 is compared with each of the thousands digits in stage A and when matched at address a2 this address is placed in register REG A and the address b5, of the first of a sub-group of hundreds digits in the next stage B for which translations exist, is obtained from associated location A2. Directed by address b5 the hundreds digit 8 is compared with each of the hundreds digits in the sub-group. A match is seen to occur at the first compartment, its address b5 being stored in REG B and a composite address a2 + cp being obtained from associated location B5. The portion cp of this address gives the sub-group of compartments in stage C holding tens digits for which, following digits 28, a translation exists. To obtain cp the address a2 in REG A is subtracted from the composite address in circuit AR1. The tens digit 4 is now employable in comparison with the digits in the sub-group the first compartment of which has the address c p and a match can be seen to be found in the second compartment with address c(p+1). A further composite address b5+d(r+2) is obtained from the associated location C(p+1) the forward part of which is obtained by subtracting the address b5, which has been stored in REG B, in circuit AR2. The address d(r+2) now indicates the sub-group of compartments in stage D containing the units digits which follow digits 284 and for which a translation exists. A match is seen to occur in compartment with address d(r + 3) which is associated uniquely with the equipment AU and directly accessible from the equipment number. The reverse translation, from equipment number to directory number, is effected by addressing the compartment d(r + 3) the address of which is the equipment number. This compartment contains the units digit of the directory number. The address d(r+2) of the first compartment of the sub-group is obtained and placed in REG D, Fig. 2. A location D(r + 2) in stage D gives the address c(p + 1) of the tens digit in the tens sub-group of stage C with which the units sub-group in stage D is associated. Address c(p+ 1) gives the tens digit of the directory number and from associated location C(p+ 1) the composite address b5+d(r+2) is obtained the backward part b5 of which is obtained by subtracting in circuit AR1 the address d(r+2) from REG D. The address cp of the first compartment of the tens sub-group is obtained and placed in REG C, the address b5 being used to access the hundreds digit of the directory number in stage B. In stage B from associated location B5 the composite address a2 + cp is obtained the backward part a2 being obtained by subtracting cp in REG C. The address a2 gives access to the thousands digit in stage A. All equipment numbers inevitably produce directory numbers, but if at any stage of processing a directory number no match can be found between a directory number digit and the digits in the storage compartment stages, a no translation available signal is produced. An abbreviated dialling process is suggested where the called subscriber has the same first two digits as the calling subscriber. A signal from 2843 that abbreviated dialling is to be employed allows translation of directory digits 28 up to address b5 of stage B. Dialled digits, such as 26, are now used to complete the translation and obtain the equipment number of subscriber 2826.
GB1231418D
1967-11-23
1968-11-22
Expired
GB1231418A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
SE16110/67A
SE345538B
(en)
1967-11-23
1967-11-23
Publications (1)
Publication Number
Publication Date
GB1231418A
true
GB1231418A
(en)
1971-05-12
Family
ID=20301737
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1231418D
Expired
GB1231418A
(en)
1967-11-23
1968-11-22
Country Status (9)
Country
Link
US
(1)
US3591726A
(en)
BE
(1)
BE724319A
(en)
BR
(1)
BR6804172D0
(en)
DE
(1)
DE1807826B2
(en)
ES
(1)
ES360189A1
(en)
FR
(1)
FR1593648A
(en)
GB
(1)
GB1231418A
(en)
NL
(1)
NL6816722A
(en)
SE
(1)
SE345538B
(en)
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2754325A1
(en)
*
1977-12-06
1979-06-07
Siemens Ag
CIRCUIT ARRANGEMENT FOR SPEED DIALING IN A REMOTE COMMUNICATION SWITCH, IN PARTICULAR TELEPHONE SWITCHING SYSTEM
US4224477A
(en)
*
1978-09-11
1980-09-23
Bell Telephone Laboratories, Incorporated
Arrangement for translating telephone station equipment numbers into directory numbers
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB805328A
(en)
*
1956-01-24
1958-12-03
Siemens Edison Swan Ltd
Improvements relating to automatic telephone exchange systems
GB979592A
(en)
*
1961-02-14
1965-01-06
Nippon Electric Co
Improvements in or relating to electrical code translator equipment
1967
1967-11-23
SE
SE16110/67A
patent/SE345538B/xx
unknown
1968
1968-10-25
US
US770511A
patent/US3591726A/en
not_active
Expired – Lifetime
1968-11-05
DE
DE19681807826
patent/DE1807826B2/en
active
Pending
1968-11-13
ES
ES360189A
patent/ES360189A1/en
not_active
Expired
1968-11-19
FR
FR1593648D
patent/FR1593648A/fr
not_active
Expired
1968-11-20
BR
BR204172/68A
patent/BR6804172D0/en
unknown
1968-11-22
BE
BE724319D
patent/BE724319A/xx
unknown
1968-11-22
GB
GB1231418D
patent/GB1231418A/en
not_active
Expired
1968-11-22
NL
NL6816722A
patent/NL6816722A/xx
unknown
Also Published As
Publication number
Publication date
BR6804172D0
(en)
1973-01-04
BE724319A
(en)
1969-05-02
ES360189A1
(en)
1970-07-01
SE345538B
(en)
1972-05-29
NL6816722A
(en)
1969-05-28
DE1807826A1
(en)
1969-07-17
US3591726A
(en)
1971-07-06
FR1593648A
(en)
1970-06-01
DE1807826B2
(en)
1971-02-18
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Legal Events
Date
Code
Title
Description
1971-09-22
PS
Patent sealed [section 19, patents act 1949]
1973-06-13
PLNP
Patent lapsed through nonpayment of renewal fees
