US3410960A - No-test or busy verification in a private branch exchange telephone system - Google Patents
No-test or busy verification in a private branch exchange telephone system Download PDFInfo
- Publication number
- US3410960A US3410960A US438182A US43818265A US3410960A US 3410960 A US3410960 A US 3410960A US 438182 A US438182 A US 438182A US 43818265 A US43818265 A US 43818265A US 3410960 A US3410960 A US 3410960A
- Authority
- US
- United States
- Prior art keywords
- test
- telephone system
- branch exchange
- private branch
- exchange telephone
- 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
Links
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Description
Nov. 12, 1968 wm ET AL 3410,960
No-TEsT 0R BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM Filed March 9, 1965 109 Sheets-Sheet 1 U) 5 .Q T a 0- E -E E u CD Q 03 x i Lu Lu 2 2 E Z 2 3 3 T 3 E g k E J 5 E B E 3 $252-$351: INVENTORS dd HJWALSH (a- WMMQXT ATTOQ/VEY Nov. 12, 1968 E. L. ERWIN ET AL 3410,960
NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM Filed March 9, 1965 109 Sheets-Sheet 2'3 Nov. 12, 1968 E. 1.. E RWIN ET L NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM 109 Sheets-Sheet 4 Fi led March 9, 1965 gmimmq v mw ENTSEN 33$? g m JEN 9% -35 Nov. 12, 1968 E. L. ERWIN ET AL NO-TEST on BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM Filed March 9, 1965 109 Sheets- Sheet 6 flaw 2 P w :2: O. mDm @vvlm gm 653E; I 652: C v 58 .v v NI |1 E azag mg @535 @w w mm nn 1 m am g A In m m mwcmfim IQ It m u a m -J T P 0 v 84 m l m EGEE E 05 8: 9 1 N ME- 6Q 89% 8259mm ,E m 8Q Aevqzs v mom owwo .Ew 29.2.5 MES w OH Nov. 12, 1968 wm ET AL NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM 109 Sheets-Sheet 10 Filed March 9, 1965 E. L. ERWIN ET AL NO-TEST OR BUSY BRANCH EXCHANGE TELEPHONE SYSTEM 109 Sheets-Sheet 11 csTmuzom 04ml:
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2 :E buxom ccTmuIom 2 cTmuIom 32 Filed March 9, 1965 109 Sheets-Sheet 1' Hill! IIHII Hllll E. L. ERWIN ETAL NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HHH E... 2... 2 8 E HHH 2 E z MMM I826 859 B I226 818.. fimmmmm :2: :2: E5 E5 1.... :2: 1.... :I: m .2... .2... 2.... :z: :z: E5 55 E IHH 2% E 2% E E WMW 2 10.226 QQIQQ 0 Hum 19:26 o0Iow Hllll l lllll Nov. 12, 1968 Filed March 9, 1965 Nov. 12, 1968 2.1.. ERWIN ET AL NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM 109 Sheets-Sheet 15 Filed March 9, 1965 3w... S S 9 S w W M M W W 9 W U 9 aavia. x 52 2.20. 2.2-9.2 52 922 56 23. 5.0 9.2.. P b b T T 5.2-282 1 55-85 5.2-85 225-8%. 1 822 8%. 55 8%. 5.28228. 1 152-0822. 1 526822 i 52-8228. 3.2-2.822. 2.2-2.822. 52-8222. 1 6.2-0822. 1 62-0823. 1 T 8.3828. 5.382%. 5.1.822. 5..-8 m.22 r 5.5822. 1 1 52 8022. 1 2 2 6E 52-3228. 8.2-2.223. 525822.
Nov. 12, 1968 E. 1.. ERWIN ETAL NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM I Filed March 9, 1965 109 Sheets-Sheet 14 2% 8m mo 5o; bu (.23: 222: 82: E 75E 8 "6 m2: 8 m2: 8 8 J J w w g m g m 5%; E E E E E P E E 8 Q E 8 i Q .t S E (lllll llllll Illlll QSTQQION Illlll llllll IIIIII IlIII'I llllll illlll illlll Illlll qwcmTourom Nov. 12, 1968 E. L. ERWIN ET AL 3410,960
NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM 109 Sheets-Sheet 15 Filed March 9, 1965 HE E Q .i Q E FL 3 6E mmm BK @035.
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Nov. 12, 1968 E. 1.. ERWIN ET AL NO-TEST OR BUSY VERIFICATION IN A PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM 109 Sheets-Sheet 20 Filed March 9, 1965 @5318 r 6822018 I I m E,
m 8m 0 8o 0 813 m s3$= I I 23 3%: sssmzz @QQQION r f 1 81% i I I T amigo? 85 1512 581 301: 3013 lulm A d D @6813 85-8169 86-8769 I ssimwlfi 6898018 s omom v I 699818 I 5%-8r8 U asmiuzom 19am H H H H w w w w w fi mmQE Quiz/E 0% mm OE mmxmiz oh (I mmOE $21 32 0h
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US438182A US3410960A (en) | 1965-03-09 | 1965-03-09 | No-test or busy verification in a private branch exchange telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US438182A US3410960A (en) | 1965-03-09 | 1965-03-09 | No-test or busy verification in a private branch exchange telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
US3410960A true US3410960A (en) | 1968-11-12 |
Family
ID=23739586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US438182A Expired - Lifetime US3410960A (en) | 1965-03-09 | 1965-03-09 | No-test or busy verification in a private branch exchange telephone system |
Country Status (1)
Country | Link |
---|---|
US (1) | US3410960A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3917910A (en) * | 1974-10-03 | 1975-11-04 | Bell Telephone Labor Inc | Circuitry for providing call override in a PBX system in accordance with a supplied class of service |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2874225A (en) * | 1954-05-14 | 1959-02-17 | Itt | Busy-verification automatic telephone system |
DE1166286B (en) * | 1962-06-29 | 1964-03-26 | Siemens Ag | Circuit arrangement for listening-in and listening-in for an operator on four-wire / four-wire through connections |
US3327065A (en) * | 1964-04-28 | 1967-06-20 | Western Electric Co | Busy verification circuit for private branch exchanges |
-
1965
- 1965-03-09 US US438182A patent/US3410960A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2874225A (en) * | 1954-05-14 | 1959-02-17 | Itt | Busy-verification automatic telephone system |
DE1166286B (en) * | 1962-06-29 | 1964-03-26 | Siemens Ag | Circuit arrangement for listening-in and listening-in for an operator on four-wire / four-wire through connections |
US3327065A (en) * | 1964-04-28 | 1967-06-20 | Western Electric Co | Busy verification circuit for private branch exchanges |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3917910A (en) * | 1974-10-03 | 1975-11-04 | Bell Telephone Labor Inc | Circuitry for providing call override in a PBX system in accordance with a supplied class of service |
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