https://declassified.library.utoronto.ca/files/original/2ff17719623d979b4822cf057f5b8f00.pdf d0ef6f312e69ea8247a9890f603ded1b PDF Text Text \ ':.'Ii (") . 114/29/G FO.r2;::IGa f t) + // ,i rcjt OFFICE, December 18, 196,4. JL ^ 'N--:4 { `^J S.';1.1. ,% ,. S am sorry to have bcen ..o lof in replying to your reference ... ,.. 1250-36(D. 31.03.) of AuC;'U3t 18 about priorities fu.. the use. of tr:;rr:.:1t1n11Lic cable tciccrr.ci h ctucrlru:l., under bi'(,ra,.ilo;.:1 Conclitions. '['ìli3 i1r1:3 been due to the rl-:c%:::r;i L for the Government ;irlital âtrli'f to obtain the re;:.cc:t :.ou:; of the other United líin&onr i)eJ(:ai'tme.ntc concerned to your Zaropocr113 und then to obtain the exzdozuenicnt of the Combined Communications Committee. .:. letter f 2. .7e havé only one minor reservation as rcL.ards your proposals, namely in the matter of Practice Alerts. It is our view that it would be bad security and also seriously reduce tests if tue handling of practice Alerts traffic the value of such by signal personnel was subject to different :tu f x'Ofl those for Operational Alerts mecca e. Accordinj,ly would x'eour(1 the tierce separate uses to which channels are put, in order of precedence as:- n a._'.';' (a) Tripartite Alerts traffic (i.c, both operational and practice) , (b) The irime L;inister to l'rc;,ident link. (c) All other traffic handled uccorúi.. to precedence. Subject to the forcé oing resevvatlon :., the Combined Communications Committee has endorsed the propoced az'ranrc.uents. You will apj reciate that as recurdo 'ordinary' traffic your d. - the nominated traffic man in London will have no alternative but ciuickly to consult .the duty cigïial officers at the other U.1;..Communication Centres concerned because co ;nc of our channels carry "on -line" encrypted traffic. On theÛc channels the precedences boira; handled at any, time are known only to the two terminal officers concerned. 3. . 4. ;Jo note that you have nominated the Supervisor, O.T.C., to be the: Canadian ,_oint of contact. 'rnc United ;:ir1(].om contact officer will 1.ßc the :ld of Shift, Foreign Office Siv;nrl O1'L'leC (Telex No. 24961, Identity 'Y'î:OJ''_2014 LD;:,' or via service mesna;.,e throu"h 0.`ì'.C. /L.T.C. or Telet)hone U;litehall 844O, Extension 137) The latter officer will be reg possible for en ,urine that action at the United iïinCdom and ;7ashington terminals i: co-ordinated u3 necessary. II(.: 5. It is sugCeated that, if you aorce, the proposed arrangements chould be effective from 12002 on February 1, 1965. . ( , -: -" S (: ` . ::.-.. T:, ., I/ . (A. RouticdCe) Colonel P. D. Smith, :;.:3.:;., C.D. Director, Royal Canadian Corps of SiCnalo, Ottawa. `" r711 T . � 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 HY00389 Title A name given to the resource [Transatlantic Telegraph Cable Channels Under Breakdown Conditions] Date A point or period of time associated with an event in the lifecycle of the resource 12/18/1964 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 Duplicate material in <a href="https://declassified.library.utoronto.ca/items/show/10686" target="_blank" rel="noopener">HY00384</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