GB1171833A - Telephone Exchange. - Google Patents

Telephone Exchange.

Info

Publication number
GB1171833A
GB1171833A GB6517/67A GB651767A GB1171833A GB 1171833 A GB1171833 A GB 1171833A GB 6517/67 A GB6517/67 A GB 6517/67A GB 651767 A GB651767 A GB 651767A GB 1171833 A GB1171833 A GB 1171833A
Authority
GB
United Kingdom
Prior art keywords
busy
line
tone
condition
reverted
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
GB6517/67A
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
Original Assignee
International Standard Electric Corp
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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1171833A publication Critical patent/GB1171833A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/92—Means forming part of the tube for the purpose of providing electrical connection to it

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Laminated Bodies (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

1,171,833. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 10 Feb., 1967 [11 Feb., 1966], No. 6517/67. Heading H4K. In a cross-bar or reed-relay PBX for a hotel, means are provided for camping-on a busy line of a certain class. In setting-up a connection, busy tone is reverted immediately an " alloutlets busy " condition is encountered in the switching network. However, if a called line busy condition is encountered, the number of this line is checked in a comparator VE which provides an indication of certain classes of service, e.g. waiter or chamber maid. If there is no coincidence busy tone is reverted. If there is a coincidence then a signal is applied to an AND gate G whose other input is fed with the line busy condition and a " call-storage circuit " is seized. This inserts a warning tone into the existing connection to the wanted party and monitors the latter's C-wire. When the existing call terminates, the wanted party is connected through to the caller who meanwhile has been receiving ringing tone. If the existing call does not terminate after a preset time, the caller is diverted to an operator position or to a predetermined subscriber.
GB6517/67A 1966-02-11 1967-02-10 Telephone Exchange. Expired GB1171833A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEST24984A DE1257875B (en) 1966-02-11 1966-02-11 Telephone private branch exchange, especially for hotels or hospitals, in which a waiting process can be initiated when busy
DE19691917674 DE1917674B1 (en) 1966-02-11 1969-04-05 Process for making contact with a transparent conductive layer inside a vacuum tube, preferably a television recording tube

Publications (1)

Publication Number Publication Date
GB1171833A true GB1171833A (en) 1969-11-26

Family

ID=25757248

Family Applications (2)

Application Number Title Priority Date Filing Date
GB6517/67A Expired GB1171833A (en) 1966-02-11 1967-02-10 Telephone Exchange.
GB1257875D Expired GB1257875A (en) 1966-02-11 1970-04-02

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1257875D Expired GB1257875A (en) 1966-02-11 1970-04-02

Country Status (4)

Country Link
US (1) US3675062A (en)
BE (1) BE699245A (en)
DE (2) DE1257875B (en)
GB (2) GB1171833A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772552A (en) * 1970-09-16 1973-11-13 Sony Corp Image pickup tube
CA962314A (en) * 1971-09-29 1975-02-04 Matsushita Electric Industrial Co., Ltd. Color camera tube having color strip filter and an index electrode
BE514701A (en) * 1971-11-27
US3924792A (en) * 1971-12-07 1975-12-09 Philips Corp Method of manufacturing a vacuum-tight electric leadthrough in an electric discharge tube
BE792315A (en) * 1971-12-07 1973-06-05 Philips Nv PROCESS FOR MAKING A VACUUM-TIGHT ELECTRICAL CROSSING IN A DISCHARGE TUBE, AND TUBE IN WHICH SUCH A CROSSING IS MADE
JPS5141536B2 (en) * 1972-01-31 1976-11-10
NL7307168A (en) * 1973-05-23 1974-11-26
JPS562346Y2 (en) * 1974-05-23 1981-01-20
JPS5274223A (en) * 1975-12-17 1977-06-22 Hitachi Ltd Pick up tube
NL7806822A (en) * 1978-06-24 1979-12-28 Philips Nv ELECTRICAL DISCHARGE TUBE FITTED WITH A GLASS-SEALED ELECTRICAL FEED AND METHOD FOR THE MANUFACTURE OF SUCH ELECTRICAL CONNECTION.
US4356530A (en) * 1979-12-15 1982-10-26 Tdk Electronics Co., Ltd. Ceramic capacitor
US6285082B1 (en) * 1995-01-03 2001-09-04 International Business Machines Corporation Soft metal conductor
FR2944920B1 (en) * 2009-04-23 2011-09-02 Pierre Sabin SUBCUTANEOUS PERCUTANEOUS ELECTRICAL CONNECTION DEVICE
FR2944919B1 (en) 2009-04-23 2011-07-29 Pierre Sabin IMPLANTABLE ELECTRICAL CONNECTION DEVICE IN THE HUMAN BODY

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040124A (en) * 1956-06-25 1962-06-19 Armour Res Found Transducer head system
US3522576A (en) * 1968-04-26 1970-08-04 James L Cairns Underwater electrical connector

Also Published As

Publication number Publication date
DE1917674B1 (en) 1970-09-10
US3675062A (en) 1972-07-04
GB1257875A (en) 1971-12-22
BE699245A (en) 1967-11-30
DE1257875B (en) 1968-01-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee