US3441681A - Telephone line concentrator priority call system - Google Patents

Telephone line concentrator priority call system Download PDF

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Publication number
US3441681A
US3441681A US501878A US3441681DA US3441681A US 3441681 A US3441681 A US 3441681A US 501878 A US501878 A US 501878A US 3441681D A US3441681D A US 3441681DA US 3441681 A US3441681 A US 3441681A
Authority
US
United States
Prior art keywords
telephone line
call system
priority call
line concentrator
sheet
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
US501878A
Inventor
George F Clement
Harry B Compton
Uberto K Stagg Jr
Charles W Zebe
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
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 Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Application granted granted Critical
Publication of US3441681A publication Critical patent/US3441681A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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

Description

A ril 29, 1969 G. F. CLEMENT ETAL 3,441,681
TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM r R a mm N M :75 202% mwmn oll I II LOTE I CCSZ oafi F. Q: Show: M a 526 m E586 5962 m2: m ww 6528 m 6538 X 1 N 5 WW I :36 w 26% i206 Q: Ill :35 v :85 $581 5 Y $5? WT 1228c ME. X 8 -29 -39 -5 m Go @2285 o9 2 Q Q 29 E9 8: JG. I; :85 0.73 KEQEQ zocuao 22 GJ w E 9% Q2 55% O O a. 8% 03 a Q i 0 i CDUEU m Q :23 -55. N: 55% 93 m2: 1 I 1 l I .F
ATTORNEY April 29, 1969 M T ETAL 3,441,681
TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Fileq Oct. 22, 1965 331110 'IVHlNBD Sheet 2 of 52 TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Filed 0ct.22, 1965 April 29, 1969 CLEMENT ETAL Sheet C3016 luprim m2] Q24 wZD April 29, 1969 CLEMENT ET AL 3,441,681
TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Filed Oct. 22, 1965 Sheet mmEm com
m IQCEW April 29, 1969 M ET AL TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM 5 t 9 n m m2? 0:: s 25?- 83% 32% 5% m A 45 3 a? w w m, c d e l H April 29, 1969 M T ETAL 3,441,681
TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Sheet '6 of 62 Filed Oct. 22, 1965 April 29, 1969 G. F. CLEMENT ET AL 3,441,681
TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Filed Oct. 22 1965 Sheet U3 E 88 6mm 8% 3% B8 03%. 0962i 5% H H88 3 55 2% U35 5% H33 53 o q 0 m o MTNT m m m & UQ W 2 Um 8 Um Q38 MWQSML tBmw mj 05% 28 2% 28 E8 2% H 80% :93 L $95 H 30% k 5% EQ f r 22 o a Q Q m 053m 228 m 22% $5M LL28 02% 028 028 m fi N W 556% mam Em m v QUE 7 LP LA 4 NE 2d OE MEL 0; LE q? @E EL G. F. CLEMENT ETAL April 29, 1969 TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Filed Oct. 22, 1965 Sheet /0 of 3 1 8&2 35G N 2% v 1 Q ll H 22 a: K 0% l 02m 5 m5 8% 2mm 0 1 mg w #1? p i 1 ms 28 E? U25 2% 2% E; E w 28 G8 o J@ 08%; 1 E28 66% E 825 359 ESQ 02?- E8 @823 SEZSSZSSm U229 IF! mGQ SEQ Sheet /7 of 62 G. F. CLEMENT ET TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Filed Oct. 22, 1965 A ril 29, 1969 8S5? I x51 45: 3%? $5; Q23 @8589 F 0 -55 Q5 3% 4 m mi! 03%. 4 9a A E5255 QZEWZEES Q85 1 aziziasao 5%. 5 na as? 5:; 96m @9338? F525 96m v #5 :22 :2: Q5 9 mt 828T BET Sheet G. F. CLEMENT E AL TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM H IN H m H /H/ IH j HE? P H l l H 3: 2 db F 1% E r :8: H 8% 08% A O L H 6%: I w E5: 2 A 83 r :5: H 8 9E: O w H 86: 6a: 02% $5: 50E 3Ez8 v. 6 Q2 60d A ril 29, 1969 Filed Oct. 22, 19 65 April 29, 1969 G. CLEMENT ETAL 3,441,681
TELEPHONE LINE CONCENTRATOR PRIORITY CALL SYSTEM Sheet 30 of 62 Filed Oct. 22, 1965 MUTCO 45:26 OF M v 20% x 21mm A 1x8 10% Imm 2% 9E8 :Eg :mm 25$ 9%. 85mm 55mm 5% SEN
US501878A 1965-10-22 1965-10-22 Telephone line concentrator priority call system Expired - Lifetime US3441681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50187865A 1965-10-22 1965-10-22

Publications (1)

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US3441681A true US3441681A (en) 1969-04-29

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US501878A Expired - Lifetime US3441681A (en) 1965-10-22 1965-10-22 Telephone line concentrator priority call system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2108677A5 (en) * 1970-09-30 1972-05-19 Siemens Ag
EP0033758B1 (en) * 1980-02-04 1984-12-12 ANT Nachrichtentechnik GmbH Emergency calling system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190965A (en) * 1961-03-28 1965-06-22 Bell Telephone Labor Inc Right-of-way switching circuitry

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190965A (en) * 1961-03-28 1965-06-22 Bell Telephone Labor Inc Right-of-way switching circuitry

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2108677A5 (en) * 1970-09-30 1972-05-19 Siemens Ag
EP0033758B1 (en) * 1980-02-04 1984-12-12 ANT Nachrichtentechnik GmbH Emergency calling system

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