https://declassified.library.utoronto.ca/files/original/4c8f04ec2732f0f940b1c98f7e6b5a58.pdf ee6b2e2c66d4b4d8a87351a065d00d96 PDF Text Text : r^^-: C.. . l í:u.a_.ï::r 1250p36 TD 5O48 (D Comm P) Canadian Forces Headquarters Ottawa, Ontario. /3 Aug 65 Commanding Officer Ottawa Wireless Station OTTA :A, Ontario. TRA.ISA.TLAHTIC COr1íU. `ICATIOIC HYDRA 1., 2. Enclosed are copies of the following correspondence: a. Foreign Office FOB/172 /6I dated 13 May 64; b. Foreign Office TA 114/1O/6 dated 23 Jul 64; co D Sïgs reply d0 Foreign Office e, CFFIQ f. Foreur. Office DSYII 114/3/0 dated 11 Nar 65 I IIQTS 711 1250®36 dated 18 Aug 6I /14/29/6 dated 18 Dec 64; :essage XOCP 851 dated 26 Feb 65; Alerts 2ssages Please note and implement agreement to transmit Alerts Dressages by Telex in event failure of HF radio and DNA 219220 3. Prime I:inister to President Telet'pe Conversations Please note that DND 11920 ìu the circuit providing this facility. In event of failure of the transatlantic cable (TATI) carrying AND 11920, alternative arran_geirents for Frime PI-blister to President teletype conversations will be arrangod using whateeer tty be ava1iableo (fliF Webbtre fu' Copies to: Colonel Chief of the Defence Staff of Communications Division Department of External. Affairs fI®s.d Director Communications Branch National Research Council Iieadquarters,, Canadian Forces Communication System Commanding Officer 701 Communication Squadron Commanding Officer 705 Communication Squadron SEC/MT �9' MAY iv u4 ..1 FOREIGN OFFICE, S.W.1. o May 13 (FOB /J "12/64) l 1964. S E C R E i, g!L., The unfortunate failures of late is the trans -Atlantic aeblès whicn culminated on Saturday last, May 9, in only the TAT 3 cable surviving for a time, has caused us some concern. This was to ensure that should a "Flaih" Alert:, situation have arisen during the period when our joint circuit in TAT 1 was out of service, we should have been able to meet the requirement by mr,king use of the ; G.C.H.Q. circuit (normally in CANTAT) which has been routed in TAT,3 since April_28. was to end that we sought and obtained löcally the agreement of G.C.a.. to our taking their cable if the need arose and serviced the U.I.C. OTC Leitrim asking him to make similar provisional arrangements for a ,Twitch at your end. It this In the event it was unnecessary for us to take the G.C.H.Q. circuit since our oven circuit was restored after two hours. But 9 in view of the likely increase in the number of trans-Atlantic /f circuits between LTC and OTC in the future, it seems prudent to consider the relative priorities of ench circuit so routed so that in the event of a failure of one or more circuit the two relay stations should be aware of any special priority commitments that must be taken account on the circuit(s) surviving. 2. 3. We have accordingly passed this question to the appropriate U.K. authority who will no doubt consult their Canadian and U.S. colleagues as required. ,/\ (A. VA, 2 (\--,0...A,U..2:1 ............SIGS 2E3 Routledge) -' Colonel P.D. Smith, Royal Canadian Corps of Signals, Army Headquarters, Ottawa 4, Ontario. a ... S E C R E T .. rl , /) : c+ ¡-`X < f ji..,.-.-:; 4/., ,. . r;.É 1 / _ i ' . ' . . . \11 or �SECRET 1 as FOREIGN OFFICE, S.W.1. r Y-1i1.1t}./10/G .-mou .51qh July 23, 1964. Please refer to my letter FOB/172/64 of May 13 about the need to resolve questions of conflicting priorities for the use of trans- Atlantic.telegraph cable channels under breakdown conditions. We have now given some thought to this question in assoc -'. .ation with the United Kingdom departments concerned and the following are the lines on which we are thinking. ''At the outset, I should say that we hope, and believe, that the Post Office and C.O.T.C. would do everything possible to help us meet our urgent commitments. As you will be aware, the risk of multiple 1Q53 of channels has been minimised by routing them in different systems spread among the three trans Atlantic cables terminated in this country. In addition the routing of channels via L.T.C. and O.T.C. \'till provide much needed flexibility in the event. of cable breakdowns. However, notwithstanding any arrangements which the carriers may make for restoring service, it is important to agree procedures for dealing with periods of reduced channel .working. 3. We are firmly of the opinion that it is not possible to lay down an immutable set of priorities to meet all possible contingencies in breakdown conditions. As you know, with the re- arrangement. of the MOD London/British Embassy Washington cable channel there will be three Government- rented channels terminated at LTC and OTC. -.ñ addition to currying Canadian, Forei(n Office, Ministry of Defence London and GCIIC and Tripartite Alert traffic, these channels have to provide, on call, a teleconference link between No. 10 Downing. Street and the Jhite House. Discussions are in prod ress with the Americans with a view to finding other ways and means of providing the No. 10 Downing Street/White House teleconference facility in an emergency. In the meanwhile we must regard a request for a teleconference between No. 10 Downing Street and the White House as being of pa :a :zount importance, all other requirements being considered on their merits at the time, having regard to such factors as :4. (a) the relative urgency and. the extent of the requirement; (b) the availability of alternative forms of communication to meet any of the requirements; (c) the estimated period of reduced channel working. We think it is quite inappropriate to place the onus for deciding how best to use the remaining channels on the duty engineering staff at L.T.C. and 0.T.C., since these staffs cannot be expected to know all the implications. However, it is important that L.T.C. and O.T.C. should know to whom they should 5. Colonel P. D. Smith, 1 .B. '., C.D., Director, Royal Canadian Corps of Signals, Ottawa. /report �report the loss of a channel and from whom they can ret instructions how to deal with the situation, The solution we have in mind, so far as the United Kingdom is concerned, is for any loss of channels to be reported by L.T.C. to the Head of Shift of the Foreign Office Signal Office. This officer, acting within the framework of previously agreed operational guidance, would then consult Quickly with the Duty Signal Officer at the E1.0.:ù., Cabinet Office and G.C.?i.'ï;. Communication Centres to ascertain the current and anticipated requirements and the state of alternative communications. These officers would, of.course, make use of their normal Departmental consultative machinery, as necessary, or as laid down in the operational guidance. Having decided how the remaining channels should be used the Head of Shift, Foreign Office Signal Office, would advise the D.S.O.s and the duty engineer at L.T.C. accordingly. As to the nature of the operational guidance, our present thoughts arc that this should be limited to stipulating that 10Downing Street/dhite House teleconferences, when called for, will have overriding priority and that the No. 10 and the Joint Intelligence Committee duty officers must always be consulted before any changes in the normal channel switching arrangements are aí;reed to that may affect the No. 10 Downing Street /White House or the Tripartite Alert requirements,. As to other traffic, the Duty Signal Officers should be well aware of the amount and nature of the traffic on hand, and of the availability of alternative routes, and should normally be well able, without consulting their operational staffs, to agree revised schedules such that all Departments concerned could clear their traffic having regard to its precedence.. The duty Signal Officer at Canada House would be consulted as necessary. ' The arrangements outlined at paragraph 5 could not, of course, be introduced and operated without tha full agreement and co- operation from all eonct rned at your end. As we see it, what io required to for. un officer to be nominated at your end with whom the Head of Shift, Foreign Office Signal Office, could deal as necessary, and who, in turn, would pass any agreed instruction to the engineering staff at O.T.C. and to anyone else concerned, It is clearly imperative that the engineers at L.T.C. and O.T.C. should be working to the same switching schedules. 6. I should be most grateful to receive your informal opinion on the arrangements outlined above and, in particular, your views on how we can ensure the necessary collaboration on the traffic side in the event of trans -atlantic cable breakdowns. The arrangements outlined in this letter, including the pro,_.osed operational_ guidance, will probably have to be submitted for agreeent on our side to the Cabinet Of ice Combined CommunicationsElectronics Committee. It would, of.course, be made clear in the C.C.C. paper that the proposed arrangements were subject to formal agreement by your side. 7. . , C,.. , I 4 ee.,1_4..) ,. a.,` , ,`.(, 1 (A. Routledge) ) , �Colonol PD Smith, Mß2, Jai y(J CANADIAN FORCES 1 e Aug 1250-3G Sic:;) IIEAD UARTZ:R3 4, Ontario 64 Dear This is in reply to your to ttor Yll 114/10/G of 23rd July 1904 regarding priorities for use of trans-Atlantic telegraph cable channels undor breakdown conditions. Consultation about use of circuits would mnko delay inevitable. +e believe this is .:nacceptable in view, of ttr naturo of t%n traffic to be handled. 41 a -rm th tho suporvi s or would report /033 of hip circuit(s) to higher authority, but fool that this should not delay and automatic by tho sonior traffic roan at each point (London, Ottawa, Washinton) to ensure traffic is handled expeditiously. .ahia is possible if a ;rorlment is reached now on pro emptin: circuits when nncossari in accordanco with the following pricedoncet r1 t; a. Operational Alerts b. Primo I.:inistor to President Teletype oonvorsations C. Practice Alerts d. All other traffic handled according to precedence in the normal manner. �rr, .y A 460 tTu i Z.._d' 4e recognize that a. and b. are of about equal imortance. :e assume that an Alerts message ori;inated at either London or ashinCton would be made known to the Prime that Aven if a tel ®type L:.iniator or President so conversation wore in pro cress the information contained in the Alert would probably be included in the conversa taon. There would thus be no need to have placed operational pre -empt. I:owever, wo the need for Crrioda to Alerts first to protect break corveres Lion with an Alerts into a teletype nessa e if this is considered necessary. : ; '.:o nominate the ^upervisor OTC to be your point of contact. Providirl;, there is rn, rnemnnt hety sen the London and Atnhin ton terminals, he would be ca.able of muking wh;tt: ever switching rants were necessary. Ile. arrange-. wóula, or course, have his instructions as to whom to notify ut Ottawa con cerninc; changes in circuits, but these people rued not be consulted if the pre -emption of circuits above proposal aoneerning is agreed. 1:/- A ßout.' nct, ;e Room 109 Fornign Office London SW 1 ENGLAND JAA/w jm Zb 411,: .tout \'4016111 - .w1141 . �1 , I14/29/G FoREIG : OFFICE, 5.' ;1.1. December 18, 1964. F ï- .'74 j I am sorry to have been so lon., in replying to your letter reference H.Q.T.S. 1250 -35(D. Sigs.) of August 18 about priorities foi' the use of transatlantic cable telegraph channels under breakdown conditions. This has been due to the necessity for the Government Signal Planning Staff to obtain the reactions of the other United Kingdom Departments concerned to your proposals and then to obtain the endorsement of the Combined Communications Committee. 2. We have only one minor reservation as regards your proposals, namely in the matter of Practice Alerts. It is our view that it would be bad security and also seriously reduce the value of such tests if the handling of practice Alerts traffic by signals personnel was subject to different arrangements from those for ar. Operational Alerts message. Accordingly we would regard the three separate uses to which channels are put, in order of precedence as :(a) Tripartite Alerts traffic (i.e. both operational and practice). (b) The Prime Linister to President link. (c) All other traffic handled accords: to precedence. Subject to the foregoing reservations, the Combined Communications Committee has endorsed the proposed arrangements. You will appreciate that as regards .'ordinary' your d. - the nominated traffic man in London will traffic have no alternative but quickly to consult the duty signal officers at the other U.K.Commuilication Centres concerned because some of our channels carry "on- line" encrypted traffic. On these channels the precedences being handled at any time are known only to the two terminal officers concerned. 3. We note that you have nominated the Supervisor, 0.T.C., to be the Canadian point of contact. The United Kingdom contact officer will be the Head of Shift, Foreign Office Signal (Telex No. 24961, Identity 'PRODROME LDI ,' or via service Of.L'ice message through C.T.C. /L.T.C. or Telephone Whitehall 8L440, Extension 137) The latter officer will be responsible for ensuring that action at the United Kingdom and Jashington terminals is co- ordinated as necessary. L4.. It is suggested that,if you agree, the proposed should be effective from 1200Z on February 1, 1965. arrangements 5. (A. Routicdge) Colonel i'. D. Smith, ::;.3.E., C.D., Director, Royal Canadian Corps of Signals, Ottawa. SECRET . f �SECRET FM FOREIGN OFFICE MAR 11/65 SECRET TO EXTERNAL OTTAWA ROUTINE OF TWO r c 4 A nP F.I.EASE FASS FOLLOWING TC CANFORCFHFr FOR PIRFCTOR OF COMM. FLANS. FEGINS0 DSYH114 /3 /Go FOLLOWING FROM ROIJTLFCGE r S A O. YOUR TFL NO XOCP g51 OF 26 FFPRUARY. GIVEN THE AVAILAFILITY OF THE HYDRA HF RATIO CIRCUIT WHEN CIRCUIT 1922 IN TAT ONE WAS OUT OF ACTION wf SHOULD FXFFCT LTC OTC TO LIAISE VIA HYDRA AND TO 1 AND FOR TRIFARTITF ALERTS MESSAGES PE TRANSMITTED VIA THIS CIRCUIT. IF THE HYDRA HF RADIO CIRCUIT AND THE CAPLF CIRCUIT 2. IN TAT ONF WERE OUT OF ACTION SIMULTANEOUSLY THEN WF AGREE THAT TELEX SHC4JLD FE USED TO FNAPLE LTC AND OTC TO TALK TO EACH OTHER AND FOR THE TRANSMISSION OF SERVICE AT MESSAGES L'FTWEFN THE PS0 LTC AND THE HEAD OF SHIFT ON THE COMPINED FO /CRO SIGNAL OFFICE. 3, THE MINISTRY OF DFFFNCE9 LONDON /PRITISH EMPASSY WASHINGTON CAPLE CIRCUIT IN TAT ONE FROVIDES THE PRIME MINISTER TO PRESIDENT TEL.ECONFERENCc FACILITY. 00 n2 SECRET �SECRET i PAGE TWO AND FINAL k THE FACILITY IS AVIL.ALLE ON DEMAND EY SWITCHING THE CIRCUIT FROM THE MINISTRY OF DEFENCE TO THE PRIME MINISTERoS OFFICE AT THIS END AND FROM THE ERITISH EMPASSY TO THE WHITE HOUSE IN WASHINGTON. IN THE EVENT OF THE LOSS OF THIS CIRCUITS AND A CONSEQUENT NEED FOR LTC AND OTC TO TALK TO FACH OTHER EY TELEX TO ARRANGE AN ALTERNATIVE ROUTINGS IT SHOULD PF FOSSIPLF TO DO SO WITHOUT EXPLICIT REFERENCE TO THE "PRIME MINISTER!PRESIDENT" LINK. TELEX COULE NOT ITSELF PF USED FOR PRIME MINISTER/PRESIDENT TELECONFERENCES. WE AGREE ALSO THAT IF LTC OR OTC WARNED THE OTHER PY TELEX OF 4 AN IMPENDING ALERTS MESSAGE, THIS MESSAGE COULD PE TRANSMITTED EY TFLEX 5. GPO CONFIRM THAT TELEX FROM LONDON HAS ALTERNATIVE ROUTES IN TNF EVENT OF PRFAKDOWN. ENDS. 1223 M.AR 65 em'a - - -. ��S IIGTïLIG MAT 3Zïn= WAX TO ?RW131E 6. :'AT= TIIROL}Cil OTC A11: LIC TO CMIEk, 1L M,.iEN27ÁYa ?.ri2'".SrcCii:L"f:Tlt)PJ Iid TIESE CML'ISTAIlC't.W BtàTWr.F.I: OTC AND LTC TLX ARE SU"i3SCRMFC MID USIiIG t3.ir1:..11 5n TUB úC.;E CII::UM SL':ï1 TO BE TO USE ALREADY Iil`á Tai.l.: } a PRCCkIt7RE ON mit EIPT If:AS5AGE I;;1IE,/ TAT OF mutIdI«:0 BY I:IT:i.2R OM CABLE AIIU T.IEFt`:FORE Ox at CIRCUIT C:..RVZCE WOULD BE FOR áiRTI::T%SG TRAFFIC CEiláRC: TABI..w.:i Mal COI= TIC II FOR: LI) BY LCTZ;,t: Iw I,ITï CT.CR T'.i ;,UPP' :IGw. "::LLY C!',RRT:.D ± .`.s4.iiTAT LTC OF AN ALERT u.922 etE I: 1;~ßIATUX CUT OF TO TRAFFIC GLIITrE, T ThLEX :LII' í*Z;AL AIM BUT MAT :.r.î:T::,14L 0ILRATOR �rc HAL CI:t A?rr . c t .T T V.a T.AT 80 - " 9c, 11., ' 11AVThi; h 4,1.) .T t.P czEz 11) 11.tE TO PAS ; 'IiL AT CIiL ALL CABLZ3 W1R CABLE C trELTIS AD IO C.UT AiT0 TO ThTE.1R.f.;?1* 100 ff.X.I.IFT OF COIL;XTICTI FarriCC=7.-; BE 't Cc:!..1.1) IT 17'11.: 77 AT '.,0(%.1., 15L All, 1:oa r:11!:CATEr) LABCIAr.;:.; iOUtI .)RK Aff) LI FACT 7:;;;',. 13L �110 i."E AFC:: ï1"r :' .:ii, nt. I.. Pïlwfi:i.i 12 .,..Y;14:-.( j:aiJ DEDICATfz3 + TEIEPRLItE_R if E 1 .7i-Ì wwRfl J,Jt:ílfi.é CIACUIr PRLSUIIABLY ;'' %+ :iG .", . ; i.^,:ì' i:i:irr` !t,ti _ '3 :.:ät% : y.i.,7yf{y Ji./ltü iJ;.l..1 II7CLUDE ÙN.LINE AND CABLE I1OR:ALLY ISS:P FOR COIiP"'TCI5 r "ii:.. . '. i ivi ''''TS_y '..ti l T'. in :f't, 'tr¡.): Ì!i :rá n-'A.rtdt CIPii'aì FRïtS OUT OF SEKVICLy ;?2T~:k Tt. TRAFFER TO SCV::: cr,Tr.;Iz AND /C[IyR+C@UI/T:yIDsYGEiT1{II`:xnS+7TATE ¡SW!jqCii.t.II1(yy¡AT 4Á7J7 VyWljll.id+Llti 3ElTVìY'RJliT.i11l1Vw1 AGAIN ESSENTIAL AIS) 33.922 ' mm OJT SWTTCFIIv(} or ÌF AT TIM TTIIG TAT ONE CARRYIND Sî+,RV1C13 TELEX -4CULD IPzTRt'CTIM.; 2á BETWEEN ViV AND r:Ri: 4.ia ,}i+lV O'yrC.r,/Syi( JwJ CatC%aT 73 BE US= TO PASS PRGELEäí MING �=Or 13, Fat Tti]$! REQUEST YOUR CÚiM1'I'S rA:37IiC ALúaTS FOR ON 1R1:3E TWO 7S Oi.T? (7F Sî.rZVICE PRYire. :.ala: TI'.P. í.E 114o ,:ri WILL TíJF.DI MCC: all FCJ<i TELEX cmI:X} CGi.F'i1CM IF CCXL'LT AFF^C'.TTZ S:=I AS RV; LEt= TOR FOR fíYUFa o TEIT ül UP YOUR 25 nJ7r:RRUTiMTo IJ1lIr 2MUJaTIIJC COLCi=, :iTILL RZ:,;UIS MIw CAUFOiJCLIM TO -..M) AWOL-CI-7111T ItJZLGRATICir'o NID Six0iß7LY USE OF TEL= TO PR['.57O::I4T á'.If.CI3CIIJT"..R iJCiì2iAi 1.OGr. FOR FIRSTLY Gm IJOIi:;AL TAT C1Z CIRCUIT PRACTICE ALt.iRIS OR 11922 150 áJ4T" POI= cambiara US ,RS T1í75 'r.t1D CAiJADIAi: OF COI î,II:iICATLZ twolta ?Lich S r .ßDD'+C:.5S FOR 5C1R 0 DIRECTOR OF COI14 rfi.AD6 Finch) Lt Col D coP.2- ,4 ! :(P oD nab) ai D Cao P � Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Hydra Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context HY00393 Title A name given to the resource Transatlantic Communications Hydra Date A point or period of time associated with an event in the lifecycle of the resource 08/13/1965 Source A related resource from which the described resource is derived Hydra Communications - Policy, RG24, 1250-36 Vol. 3, Library and Archives Canada (LAC) Creator An entity primarily responsible for making the resource Department of National Defence Rights Information about rights held in and over the resource Canadian Crown Subject The topic of the resource LTC, OTC, transatlantic cables, White House, 10 Downing Street, emergency planning, emergency communications, tripartite alerts Description An account of the resource Memorandum pertaining to procedure for handling traffic if circuit 11922 is out of action. Alerts messages to be transmitted via Telex if 11922 and HF Radio circuits fail. White House/10 Downing teleconference link is normally on circuit 11920 (TAT1 cable). Should this circuit fail, alternative methods should be arranged "using whatever may be available." Correspondence attached for reference includes material duplicated in: <a href="https://declassified.library.utoronto.ca/items/show/10680" target="_blank" rel="noopener">HY00382</a>, <a href="https://declassified.library.utoronto.ca/items/show/10683" target="_blank" rel="noopener">HY00383</a>, <a href="https://declassified.library.utoronto.ca/items/show/10686" target="_blank" rel="noopener">HY00384</a>, <a href="https://declassified.library.utoronto.ca/items/show/10692" target="_blank" rel="noopener">HY00386</a>, <a href="https://declassified.library.utoronto.ca/items/show/10695" target="_blank" rel="noopener">HY00387</a>. Publisher An entity responsible for making the resource available Canada Declassified Type The nature or genre of the resource Text Format The file format, physical medium, or dimensions of the resource PDF Language A language of the resource en