US2928903A - Switching system and translator therefor - Google Patents

Switching system and translator therefor Download PDF

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Publication number
US2928903A
US2928903A US416118A US41611854A US2928903A US 2928903 A US2928903 A US 2928903A US 416118 A US416118 A US 416118A US 41611854 A US41611854 A US 41611854A US 2928903 A US2928903 A US 2928903A
Authority
US
United States
Prior art keywords
line
translator
switching system
intercept
bellamy
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 - Lifetime
Application number
US416118A
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English (en)
Inventor
John I Bellamy
Theron L Bowers
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.)
TDK Micronas GmbH
International Telephone and Telegraph Corp
Original Assignee
Deutsche ITT Industries GmbH
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 BE522048D priority Critical patent/BE522048A/fr
Priority claimed from US85292A external-priority patent/US2674657A/en
Application filed by Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Priority to US416118A priority patent/US2928903A/en
Application granted granted Critical
Publication of US2928903A publication Critical patent/US2928903A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Definitions

  • the sleeve field 12 IVC3a Spare levels in sleeve lield-- 12 IVC4.
  • the reset field 12 IVD Operation for normal lixed translation- 13 IVDl. Setting up the dialed number in the translator 13 IVD2. Preliminary translation 13 IVD3. Operation of the translator relays- 14 IVD3a. Fives translator relays 14 IVD3b. Twenty-lives translator. re-
  • Intercept-trunk sleeve wires 23 IVG2b Setting the group allotter-- 24 IVG3. Overriding translation for first incept trunk 24 IVG4. Using the second and third intercept trunks 24 IVGS. Clearing out 24 IVG6. All intercept trunks busy 25 IVG7. Number-transfer and intercept service for the same line 25 IVI-I. Common-number service 25 IVHl. Making up a P.B.X group 26 IVHla. Using ten-trunk equipment P.B.X for group 000 26 IVHZ. Calling common-number group IVI-12a. All common-number trunks busy 27 IVH3. Making up three-trunk groups-- 27 IVH4.
  • common control apparatus is provided to receive dialed digit information for use in controlling the extension of connections to called lines.
  • Such common control apparatus includes (1) a block controller for generally supervising the extension of connections, (2) a block translator for translating the decimal digit information (hundreds, tens, and units) of the called number into non-decimal digit information (frame, primary, lives, and units) identifying the physical location of the called line, and (3) an out! going controller for controlling the extension of connections to called outgoing trunkgroups.
  • a specific object of the invention is to provide a block translator which is arranged and interconnected to normally effect a. fixed decimal-to-non-decimal translation of the line digits of called line numbers according to the normal physical location of any called line and which is further arranged to set aside the fixed translation, when required, and substitute Van yoverriding translation therefor for extending a connectionto the line at a different location.
  • a further vfeature is that the noted overriding translation operation permits the continued use of line numbers assigned to lines terminated at changed locations thereby enabling traffic unbalance among certain line primary switches to be corrected Without changing line numbers.
  • Service according to this feature is referred to herein as number-transfer service.
  • a further feature using the overriding translation operation resides in an arrangement for providing intercept service whereby calls to disconnected'lines or disconnected stations on party lines are directed to an intercept operator.
  • the translator responds to the calling of the number of a disconnected line or station by cancelling the normal fixed translation and substituting an overriding translation to route the call to an intercept operator.
  • Service according to this feature is referred to as intercept service.
  • a further feature concerned with providing intercept service resides in Van arrangement whereby a group of equivalent intercept trunks is provided and the overriding translation is varied to correspond to a currently idle intercept trunk.
  • Fig. l is a singleline block diagram of the apparatus employed in extending connections to and from lines and trunks and showing the relationship existing between the block translator and other apparatus of the disclosed switching system;
  • Fig. 2 shows the line-numbering plan of the switching system embodying the invention and the translation plan for the block translator;
  • Fig. 3 (parts 1 to 8) is a circuit diagram of the relay section of the block translator.
  • Fig. 4 (parts 1 to 5) is a circuit and wiring diagram ofthe pin-terminal section of the block translator.
  • the apparatus of exchange B includes the main distributing frame MDF., through which the subscriber lines and the trunks are interconnected with the switchboard apparatus; four line-link frames A, B, C, and D, of which line-link frames A and B are shown at 250A and 250B; a block-link frame shown .at 25; ⁇ and attuali-couplerA frame shown ⁇ 21.252.
  • each of the four line-link frames A to D terminates 25() lines, providing a capacity of 1000 lines for the exchange.
  • line-linkframe A for example, its function is to connect any calling one of the 250 subscriber lines which it serves with an idle one of a group of voriginating trunks, such as trunk 203A, and to interconnect any of its terminating trunks, such as 207A, with any called one of the subscriber lines connected with the frame.
  • line-linkY frame A is provided with a number of line-link primary switches 800A and a number of line-link secondary switches 900A.
  • the originating trunks extend from respective vertical locations on the line-link ⁇ secondary switches, such as is shown for originating trunk 203A.
  • the terminating trunks are connected to their own respective vertical locations on the line-link secondary switches, such as is shown for terminating trunk 207A.
  • the line-link primary and secondary switches are interconnected by 'a suitable number of line links, one of ⁇ which is shown at 202A.
  • the apparatus on ⁇ lineflink. frame A further includes line-controller apparatus comprising line-controller switches .1000A and iltltlA, and lineA controller 1200A,
  • line-controller switches are ilOllA and 1100A, and are interconnected with line controller l200A kby a group of control wires
  • the general purpose of the noted line-controller apparatus is to controll the interconnection of lines with trunks through switches 800A and 900A over two-way line links 202A. This general control resides primarily in line controller 1200A.
  • Line-controller switches The purpose of the line-controller switches is to interconnect line controller 1260A with any concerned linelinkprimary switch such as 800A over conductors such as 211A and 212A.
  • Line-link frame B (shown at 250B) contains apparatus similar ⁇ to that of line-link frame A. rhe correspondence is shown by employing the letter B as a sufhx for each reference character applied at linelink frame B, whereas theletter A is used as a suiiix for each reference character appliedrat line-link frame A.
  • the purpose of the block-link frame, shown at 251 is to extend connections received over yincoming trunks such as 2085, and over originating trunks such as 203A, to an idle outgoing trunksuch as 2020 in a called group, or over an idle terminating trunk such as 207B to the linelink frame terminating the called line.
  • the block-link frame is provided withV a number of blocklink primary switches such as y1300 and with a number of block-link secondary switches such as 1400, interconnected by block links 206.
  • the incoming and originating trunks such as 2085 and 263A are required tobe suitably coupled to the switchboard apparatus at the block-link frame in order that the necessary digit information as to call destination be recorded and acted upon.
  • This general function is assigned to block couplers S00 individual to the respective incoming and originating trunks.
  • incoming block coupler 50B-I is connected individually with incoming trunk 2085 b v jumper 204', while local block coupler 500-L is connected individually with originating trunkV 203A through jumper 204.
  • Conductor sets 232 and 20S extend the incoming and originating trunks 2985 and 203A beyond the block couplers to respective vertical locations on blocklink primary switches 1300.
  • the outgoing and lterminating trunks (such as 2020 and 207B) extendfrom respective vertical locations on block-linlt-secondary switchesltll.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Exchange Systems With Centralized Control (AREA)
US416118A 1949-04-04 1954-03-15 Switching system and translator therefor Expired - Lifetime US2928903A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE522048D BE522048A (en)) 1949-04-04
US416118A US2928903A (en) 1949-04-04 1954-03-15 Switching system and translator therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85292A US2674657A (en) 1949-04-04 1949-04-04 Primary-secondary-spread crossbar telephone system
US416118A US2928903A (en) 1949-04-04 1954-03-15 Switching system and translator therefor

Publications (1)

Publication Number Publication Date
US2928903A true US2928903A (en) 1960-03-15

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US416118A Expired - Lifetime US2928903A (en) 1949-04-04 1954-03-15 Switching system and translator therefor

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BE (1) BE522048A (en))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112372A (en) * 1960-10-03 1963-11-26 Bell Telephone Labor Inc Telephone marker translating system
US3131262A (en) * 1960-07-27 1964-04-28 Bell Telephone Labor Inc Telephone system with selective code compression and register recycle
US3131261A (en) * 1960-07-27 1964-04-28 Bell Telephone Labor Inc Telephone system with selective code compression and register recycle
US3136862A (en) * 1960-12-05 1964-06-09 Automatic Elect Lab Call discriminating arrangement for automatic toll ticketing telephone system
US3283081A (en) * 1961-05-10 1966-11-01 Int Standard Electric Corp Selection systems

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2108140A (en) * 1935-03-18 1938-02-15 Siemens Brothers & Co Ltd Telephone system
US2201573A (en) * 1938-11-16 1940-05-21 Bell Telephone Labor Inc Telephone system
US2227488A (en) * 1938-06-17 1941-01-07 Bell Telephone Labor Inc Telephone system
US2268397A (en) * 1940-06-12 1941-12-30 Bell Telephone Labor Inc Telephone system
US2342279A (en) * 1942-12-31 1944-02-22 Bell Telephone Labor Inc Automatic toll ticketing system
US2375136A (en) * 1944-05-05 1945-05-01 American Telephone & Telegraph Telephone system
US2392089A (en) * 1944-06-23 1946-01-01 Bell Telephone Labor Inc Switching system
US2409063A (en) * 1941-09-18 1946-10-08 Automatic Elect Lab Telephone system
US2678353A (en) * 1949-02-12 1954-05-11 Automatic Elect Lab Telephone system
US2713681A (en) * 1951-12-19 1955-07-19 Ericsson Telefon Ab L M Impulse generator for debiting of communications

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2108140A (en) * 1935-03-18 1938-02-15 Siemens Brothers & Co Ltd Telephone system
US2227488A (en) * 1938-06-17 1941-01-07 Bell Telephone Labor Inc Telephone system
US2201573A (en) * 1938-11-16 1940-05-21 Bell Telephone Labor Inc Telephone system
US2268397A (en) * 1940-06-12 1941-12-30 Bell Telephone Labor Inc Telephone system
US2409063A (en) * 1941-09-18 1946-10-08 Automatic Elect Lab Telephone system
US2342279A (en) * 1942-12-31 1944-02-22 Bell Telephone Labor Inc Automatic toll ticketing system
US2375136A (en) * 1944-05-05 1945-05-01 American Telephone & Telegraph Telephone system
US2392089A (en) * 1944-06-23 1946-01-01 Bell Telephone Labor Inc Switching system
US2678353A (en) * 1949-02-12 1954-05-11 Automatic Elect Lab Telephone system
US2713681A (en) * 1951-12-19 1955-07-19 Ericsson Telefon Ab L M Impulse generator for debiting of communications

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131262A (en) * 1960-07-27 1964-04-28 Bell Telephone Labor Inc Telephone system with selective code compression and register recycle
US3131261A (en) * 1960-07-27 1964-04-28 Bell Telephone Labor Inc Telephone system with selective code compression and register recycle
US3112372A (en) * 1960-10-03 1963-11-26 Bell Telephone Labor Inc Telephone marker translating system
US3136862A (en) * 1960-12-05 1964-06-09 Automatic Elect Lab Call discriminating arrangement for automatic toll ticketing telephone system
US3283081A (en) * 1961-05-10 1966-11-01 Int Standard Electric Corp Selection systems

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Publication number Publication date
BE522048A (en))

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