GB1162484A - Unit for Selective Blocking of Subscribers for Telephone Exchanges. - Google Patents

Unit for Selective Blocking of Subscribers for Telephone Exchanges.

Info

Publication number
GB1162484A
GB1162484A GB1616568A GB1616568A GB1162484A GB 1162484 A GB1162484 A GB 1162484A GB 1616568 A GB1616568 A GB 1616568A GB 1616568 A GB1616568 A GB 1616568A GB 1162484 A GB1162484 A GB 1162484A
Authority
GB
United Kingdom
Prior art keywords
subscriber
store
call
subscribers
blocked
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
Application number
GB1616568A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp (ISEC)
Original Assignee
International Standard Electric Corp (ISEC)
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.)
Filing date
Publication date
Priority to DEST026717 priority Critical
Application filed by International Standard Electric Corp (ISEC) filed Critical International Standard Electric Corp (ISEC)
Publication of GB1162484A publication Critical patent/GB1162484A/en
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/436Arrangements for screening incoming calls, i.e. evaluating the characteristics of a call before deciding whether to answer it

Abstract

1,162,484. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 4 April, 1968 [8 April, 1967], No. 16165/68. Heading H4K. In a telephone system a common store stores the telephone numbers of subscribers between which called must be blocked, and for each call the store is interrogated for the stored combination of the calling and called numbers. A stepby-step system and a register controlled system are outlined. The store is divided up into sections, each of which may be permanently associated with a subscriber and have an address corresponding to the subscriber's telephone number, or may store theidentity of the subscriber with which it is at present associated with. In either case the store is adapted to block either incoming or outgoing calls in that it stores the numbers of other subscribers to or from which calls should be blocked. These may be the complete designations of individual subscribers or the common digits (e.g. the exchange designation) of groups of subscribers, the remaining digit spaces being filled with special signals. During the establishment of a call the store is interrogated for a storage section associated with either subscriber to be involved in a call and if such a section is found the subscriber and/or group designations in that section are read out sequentially under the control of a counter and compared with the number of the other subscriber involved in a call. In the event of a match being found, the call is blocked and a characteristic tone is transmitted to the calling subscriber.
GB1616568A 1967-04-08 1968-04-04 Unit for Selective Blocking of Subscribers for Telephone Exchanges. Expired GB1162484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST026717 1967-04-08

Publications (1)

Publication Number Publication Date
GB1162484A true GB1162484A (en) 1969-08-27

Family

ID=7461096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1616568A Expired GB1162484A (en) 1967-04-08 1968-04-04 Unit for Selective Blocking of Subscribers for Telephone Exchanges.

Country Status (4)

Country Link
BE (1) BE731978A (en)
DE (1) DE1512981B2 (en)
ES (1) ES352547A1 (en)
GB (1) GB1162484A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277649A (en) * 1980-01-18 1981-07-07 Bell Telephone Laboratories, Incorporated Method and apparatus for screening telephone calls
US6349134B1 (en) 1985-07-10 2002-02-19 Ronald A. Katz Technology Licensing, L.P. Telephonic-interface statistical analysis system
US6434223B2 (en) 1985-07-10 2002-08-13 Ronald A. Katz Technology Licensing, L.P. Telephone interface call processing system with call selectivity
US6512415B1 (en) 1985-07-10 2003-01-28 Ronald A. Katz Technology Licensing Lp. Telephonic-interface game control system
US6570967B2 (en) 1985-07-10 2003-05-27 Ronald A. Katz Technology Licensing, L.P. Voice-data telephonic interface control system
US6678360B1 (en) 1985-07-10 2004-01-13 Ronald A. Katz Technology Licensing, L.P. Telephonic-interface statistical analysis system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277649A (en) * 1980-01-18 1981-07-07 Bell Telephone Laboratories, Incorporated Method and apparatus for screening telephone calls
US6349134B1 (en) 1985-07-10 2002-02-19 Ronald A. Katz Technology Licensing, L.P. Telephonic-interface statistical analysis system
US6434223B2 (en) 1985-07-10 2002-08-13 Ronald A. Katz Technology Licensing, L.P. Telephone interface call processing system with call selectivity
US6512415B1 (en) 1985-07-10 2003-01-28 Ronald A. Katz Technology Licensing Lp. Telephonic-interface game control system
US6570967B2 (en) 1985-07-10 2003-05-27 Ronald A. Katz Technology Licensing, L.P. Voice-data telephonic interface control system
US6678360B1 (en) 1985-07-10 2004-01-13 Ronald A. Katz Technology Licensing, L.P. Telephonic-interface statistical analysis system

Also Published As

Publication number Publication date
ES352547A1 (en) 1969-08-01
BE731978A (en) 1969-10-24
DE1512981B2 (en) 1975-07-17
DE1512981A1 (en) 1969-06-26

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee