TAP No. 66 - Fortress Fun-Ding

FORTRESS FUN-DING a value pulses jntetal Rate (VIR) ‘tha col javeloped for nev -stagle-sict coin teleghones, elintoates the bulky mechanical gongs. sahing room for # nev fraud resist fant cofn chute. Ie fuproves che quality stguelling as heard by the operator by provi Tens An lave) wt ‘in Lina length between the telephone and the evicching office. Stgualling security 18 stgualling etreutt, deny service to all but (rea calls unless the tolttal rate ip depoested. the telephons wales circuit. Thun, Amporcant design objectives for the nav cote etreult vare to operate on the pover available from the telephone Line and to be heee Linear amplif= fabricated oo wo ¢ CNS technology. elreutt and ated ctreuits osiog ede re provided power eens such as Eransient and polarity protection. sovesr: Dis wuiteh contact applies central office battery de to matneata cirentt, corrects Line voltage polarity, and protects the circutt ageint tranatenta onthe ‘Ao external reset clrcutt prom supply vitch disables the efrcoit during operations Cote ‘emergency calliog capability, to activate an qviteh. The intttal rate may be varted from 5¢ to 40c th Se ineremente. ‘To improva the Line balance ground taolatton 1 provided. This cireutt senses the presence of 100} Current aod opens tha ground path during the ealhi ported. ‘2708 TUNE osctLtaToR The gateabte ONS sine vave oscillator used to the cota atynalling etreate utilizes three QOS taver~ tora (A1.Az,Aj in Fig. 3) in the foltoving vay- connecting the input and provides stabilization of the output resistance of 42 to control frequency drift. Lindting diodes Dy,02 and thermistor By; stabilize the oscillator output voltage with regard te temperature and supply voltage gating 2 constant fant riee tine for the output tone & ‘To have tummed the osesilator on and off vould have required & to achleve Ya 9 Cue ta Ou See tee Roane Batty Ora , ai ~ eww” TAP Room 603 147 W, 42 St. New York 10036 MAR-APR 1981 ensured ot ferent temp ves ond Line lensthes gorcusi ot Tha concept of the nev coin atgna! cocalixtng efreuit favelves the use Cachnology vith a capability for iaplenenting tinear an veld a1 functions, 2 tolerance for a wide tx and the pover supply. having those the speech netvork, and vithout golag £0 ‘expense of « local ‘pover supply. panded totalizing and Schleved with technology LETTERS FROM READERS On Long Island if you dial 958 you get a uter with a voice which announces the er from which you are calling. I have been told that 1f there is a tap on the line the voice doesn't say anything so it's one way of checking a line for a tap-- I don't know if this is a fact and, if so, it is because of some condition on the line which prevents the computer from uttering anything or 1f the phone co programs the corputer not to respond to 958 calls which come from numbers they have taps on-- or what happens 4f it isn't a MA Bell approved tap. I also don't know if 958 produces any response from fenes outside of my oun a but in Long Island {t does produce a response. I've been to people's homes where they have an unlisted phone and have thoughtfully removed the number from the phone so their casual guests can't get it-- ol’ 958 has come through every time! Free magazines? Easy! Next time you ao to a doctor or dentist's office, sort through the mags in his waiting room. See any you like? Pull off the address sticker on the front cover, attach it to the change of address coupon in the magazine, and send it back to the publisher. In a few weeks you'll be getting the magazine (hopefully at your P.O. box). Sometimes it takes the better part of the year before Doc realizes what happened and then yets {t straightened out! Good luck! Super Grinch ‘peuoyos —_:s8290x0 sus UL 98n om pouxinbe pue Sey zedoyonop peoyzics oun teyl Bueoo syeuojeU ay jO 139 W & GUB}Y *EDIEOQ HD fxoun 841 HO any ‘sped Buagny 19 peud jo voRSNpoXd ou 0} axTEBOU ep fmoxoog Gun ‘pedo 0 wn Bonn 99 UD 8 ORL USUI 8} WA BursiOAO YeDUTIODS OU JO TRIGA) w I HMSO! BL 78) Su ‘ODuoIa}O1 © SB GIOR URD “WI UO Onke) ede) LE je~BU0 oY) UBNORD WroUaIONg aut UWm pexddns umoys 144 1}OWNRIAN cy Ay CuRBTOADL “@wn sunsodxe 120109 10; s10Qys -croyd AuedwOD WE ascdhe OM ‘peo uoweay20d8 oi YBROUIIE "92INOS Ou) 4] BIBUIED OV EDEN ONbUYDE! 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IR] 22 Dawud ou ereeiSep pomzeruew Jado(eAsp YwEsy OUVO eDOY AAs “ArsNOnD peresbsILe Yom POLEDOS (u80g Sey ens1@BevOIOUd ey) 1 OdAL (dw) Bey COUG YePOY — «SB SHNDHD POW 10) PURW nai pawd oun Gum SyuoIeW 2p peeidsapm out jo ese: APU, A6iouy SPUDO HNWID poyud uNy-ous Bujnpold Mick's Easy Guide to CCITT Signalling Systeas v,zhe CCITT has set standards for signalling ms in use throughout the worl Bite Provisions fer guy beloved AF tones so don't Mperinenting with — “this ingori certt ‘using The 500 RS one-way iii Mozambique GoItT 92.2 propoged internetionsl cysten. thet didn't catch on. It u: G00/750 hs in a single frequency gagnailing svsten.. Seen to o 5 Gause it's used in South Arica, New Zealand, jd Austrailia. corrT #3. one of the Pans ine! It ugas 250 hz for bot! Nearly all torainol with systea, Motice’the Feanch ingiu gs system is France, austz: Poland, Thailand, ond Hungs: ais zupted at 20 hz to s eg register signals. Stilt u stems. he us! cerrr ou another earl 2040 ang 2900 Hine ha Zapsater sia y ingband ay: this one using ox end-to-end transmission of ls. Widely used Zor Anternstionol tras#ic in Europe and suitable for both tern- inal and transit traffic. Said t biou cetcup Sor cateliite iinks and cannet be used FR on TASI~equippad systens. Used in Italy, Azgentina, Kenya, Syria, and Uganda. cerr: Te Sis ie our favorite i 2900 and’ 2¢00° Yor links: dine signals and a 2-976 code, for, the tranomigsion of registe: he 2704-6 code gees 6 drequoneiog’ (700;9005 1100; 1209. 1500,6, 1700) in. schema that I'm sure ail of you are faniliar with. Used fox TAST-equip; suitable for both teznina. This is the current world stand: avery other system can interact ccrrT_95 bis. This is ‘very similar te ¢5 except a gaurd and FASI-locking frequency of 1850 hn io used for transmission of five signals. ccrtr, and system. It uses Link trengrissien of 2 gables and it traffic. nad nearly h this one. ped, gubs This seens to be the wave of the future. I'm sure you have recd about it so x won't try to quplain. this is an outrof-pand signalling systen th: trietly tal. The connection is nade t di and the billing is started before you, got control of the Ling, exe Jics the grast challenge of the 80's. Gat the datails in Vol VI.2 of the Orange corr Rt Rey LS: thi 43 ig Ragiona is novonant and youvean easiiy the sinijaritios between this system and CCITT 35. In fact about, the only difzcrence is that R1 does not have 2400 A gignolline end cannot be used with Squipped Syetens. this FEstenant, indicctes, a Hy ible Connection setwcon 000 he and Taste what joes 2400 hz do anywa: I can't find any reference to it in my litezatur CCITT R2. Naturally enough.thig ic Regional Systen 2. land 85 becauge it uses a tex signals. Houever this dent forward and backward 3825 or trapgnission ATET heads wi familiar 2600 92 course S825 2 Gutcosoband socthis is net oad: fo feat, The Z:aquencies cre ag gollous: “foruasd- 3389. 1800, 1629, 1780. 1860. £ 198¢. backuar 1140, 1020. 900.780, 660 suo Notice that tha spa ng Retueen frequencie: 120 ha hile the spacing betueen frequencie: Ccxrtr o5 is This system seens to be coupatabla with & iiitary AUTOVON sya n I “on the have uritton a se: te article speculatin: AUTOVON signalling system which I'm submitting at the some tine. Mick Haglinger 900 1100 1300 1500 1700 700 goo 1100 «: 1300 1500 "The six frequencies provide 15 possible 2-freque Goabinations fan combinatgons used for the digrts’g to/§ incaveiye and enc euch for signals aint faging the beg: treet Pp) ani nd (st) of diging. the veuntning ehzes combinations ore us ox special signals. from ‘Notes on Distance Dialing’ (sec 5 p ers to in fhe aR system’R1, which is shown as 1 tede in the above chart. the 3 extra b mgoare ii, 12, and 2. Z suspect this unknown code OE ze shoun on zight-hand side. I fe Ss that 1300-1700 is code BV in light of the above’ te. SPECIAL SIGNAL SUBSETS scxTT ¢5 s Ti = inward operator Xs 12. = delay operator cy Eb 2 Efdnett ontt Fy 5 8 - transi’ 3) = qxtza signal (probably BV? « Coin Control Signals (details in TAP 954 ) Tae CC - coin collect CR - coun return £3 - ring back . TSPS (Traffic Sexvice Position Systen) iE As _necessery vo/adontagy the trunk type in TSPS. 1.4 digits (coin station? G's digite (coin station) Sizp - 1+ digits (none Sip > 0 3 GHgiEE (Ronesan) E OF FREQUENCIES IX SELECTED SIGNALLING SYSTEMS RAVES, Re-gud an \ feat “Lhave an idea for our age QUENCY lax} | hey computerization, If soot) |) (INZA ! ne or fo lt | * yo it ot | tat | 300 t ,oretyd 1920 I | Pay 1100 fx 1 ia 1140 { etxl 1260 ' {x Weiei total te tas | | fet orto sr er 70 tet I ! He |" ot dal ts Hef dt deal | 1 E 2300 | Pepe i Ha eee | | “tual | t | 2700 | « ! "Your Access Code Tom, input Your zaz0 Inzal 1 | . 7 e300 | \ aaa } 1 Access Codelt ‘Frequoncias in 120 hz incremonts from 540 ha, and in hz increments #2on 500 hz Frequaicies mazked N/A £it in sequance but have no knoun us Since the norml DC coin control signals cannot be used on exchanges, Bell has come up with two other methods of coin control. The first of these is known as MULTIPLE WINK COIN |» Take special note of the OPERATOR ATZACHED and OPERATOR RELEASED signals, (Kilgore Trout in TAP#37 asked about this) OPERATOR ATTACHED ds used to disable the keyset TOR RELEASED signal 4s used 1 HE a & ? second method ds imown as INBAHD COIN CONTROL (ICC). fers to the andible tones used for contre]. We know thest i zeae | E E 3 i é i nu : ! k sare as the OPERATOR RELEASED signal motioned should start sbout 60 ms after the wink ends, Should Last 900 us. The wink, from start to finish, application of his informtion would be to design a dal mite that gives tho calling party their coins back. Tt my also bo possible to OPERATOR ATTACH a pay station and Frevont the operator fron regaining control. if wey its i E i [ f 3 z ‘TABLE I. # WINKS FUNCTION EAVEPORM ‘Touzs ney operator released __fielL__ 2 oparator attached fro L2H ea 02 e0dn coldect 700 * 1200 & coin return 1100 + 1700 3325 ring back 700 + 1700 MORE on AUTOVON I really enjoyed Ted Vail's discussion of AUTOVON (TAP 60) and it started the old synapses firing . I think the ansuer has been right in front of us oll the time. Let's ctart with Some basic fact. about AUTOVON ond MaBELL. 1) AUTOVON uses BELL's long distance lines 2) It follows that AUTOVON signaling must be compatable. 3) ALL CCITT analog sagnalang systems used in Amezico are ree ere eeedes wath, © evendy spaced frequencies a2 ab 4) The military dousn't have the ability to create their syst It looks like the ‘USAF ‘412L' matrix is just 14 fouch Tone matrix. These are both 2-of-8 codes and as far as I know they can only used to transmit digits te the central gfzice. Lets compare the tuo matrices sade by side. Note that the DELL ‘frequencies are metricaly spaced while the AUTOVON frequencies are evenly spaced. jell Touch Tone AUTOVON Touch Tone AUTOVON doesn*t use * and #, and the A.B.C,D has been replaced with FO.F.1,P. These letters designate which priority Glass you request Zor your call. FO is FLASH OVERIDE. F is FLASH, I ag IMMEDIATE, and P as PRIORITY. P is the low priority class and FO’is the highest class available. to usc at. we ee The, [Peioxity request! is first handled to see if the desired class 1s available. 1 Eioraty ta e bumped off and the higher : i zed the eal gutgoing dine is capture *HFY tones and proc - One of the digits in this 12-digit number as the IDENT: ach Bell uses to dis— Einguich pay phones h Phones, and hotel phones. I believe AUTOVON uses this digit to carry priority information to the called party. The article raised some tions in my mind so I refered to py rederences and found some interesting data in the CCITT ‘Ogange Book. AUTOVON hos aany points of aimilarity with BELL gnaling system RZ. R2 uses 2 sets of 6 Zrequencies (tuo 2-of-6 codes) for independent forward and backward signaling. These frequencies are listed below and the readaz cen construct a matrix dor study 12 desized. 1380, 1500, 1620. 1740, 1860, and 1980. 1146, 1020, 900, 780,°660, and 540. Some of these frequencies (1020, 1140, 1380, 1620, 1960) axe used an the AUTOVON Touch Tone. One othe: uged in the AUTOVOM TT, ond it should come as no *™vpr 1260 is this frequency, Notice that all R2 frequencic Beeeteneiea’ *alzo note that the AUTON frequencies are e that the iy $00-1500 ha and 1500-2100 ha. Refer to the tabte at the end of this articl This brings up the possibility that AUTOVON is only a special case of R2, If this is true then we have probless 2 does not use in-band line controls. R2 uses ‘og—hand control for line signals and az a TASI-locking frequency. Of course we Know the military and they. with this systen by themselves. It's pogsibl Zor touch tone ond the frequencics were ‘3 Don't try eal, on the Ling end £ not @ caller i Forward: Backwoxdt 1740 and fzequency is se that couldn't come up @-that tha si2L system 25 only use ry Cnosenia -gecus lskely because the Army TA34) syatem seens to fit Riva5 system quite well. It also 5 compatable texnationnl signoling systems where AF 412L is not. dru out the BELL antrin and the Army TA34) matrix for comparison. Taka the BELL matrix and add 1200 ha to every dxequency. 900 1100 1300 1500 1700 |_2100 2300 2500 2700 2900 UP Up Pn Tae Pt nn rs) 2300 | 2 6 2 Oo KP 2500 | 5 2 st 2700 | ? AUTOVON MF tones Boll MF tones I say more? The only thing missing is the oxder of te 0in the AUTOVON system, Z guspoct they will be the sanc Both matrices represent @ 2-of-6 code. Since Beli long lines ore ugsad in the AUTOVON systen, if as easonable that AUTOVON would use a compatable signaling sy: tis possible that AUTOVON HF toncs are converted to NF tones before heing plnced on the long distance netuork. 22 ial equipment to Surely so! sten. ELL other possibility 2s that as spe ubtract' 1200 hz from each signalling tone. Zind out and let me know. one can Write ne in care of TAP Mick Haflinger devedopen the tieent Seam the alp code. | ay soe te enon “How did you solve the last problema?” ‘That was the most diffleuit,” be sald. “TH6 post office has been Locksmiths pick away at Caan’s ‘Thief’ of thew property and possessions, andereatea Ina interview, direc: . - fecing of secey dog anger songs thee tor Michael tam cans $6,000 flim-tlam: HOLLYOOD — James Coan's oest victims against whom such information = it does show fo pick \DINGTON TOWNSHIP movie. “Thief snot due oat uotil February, be ased,” Kenseth R, Lasser Sr, chalrman' safe. Authorities have arrested four persons io Dut atready ot has gotten lis first review. the Professional Locksmiths “Coordinat “But eriminaligh the connection with a fraudulent withdrawal The Frofessiooal Locksmiths Coordieat- — Gouneil of California, wrote the producers a ‘scheme that temporarily petted $6.908 ing Council of California and assorted safe the fim ina letter dated June 30 letter is inaccurate. You bow to sebeme that ten rmanefacterers 60 not lite the movie, Too nla safe afer seeing ‘rue Citizen National Bash police Detes- xt . eee also bave to have 15 years of experience to pet ‘tive Dan Smith said yesterday. ‘This ume the [seoes are not sex, violence “We do not betieve that the general pub- he methods shown into operation.” ‘or four-letter words but graphic depiction af lie has the need to know how to érill open 3 ‘Mann and Caan do not have that hind of S€count would be opened for $34, Senith a ‘safe or olberwise gain entry into probibited experience, 20 they hired someone who did, , $14. The next day, about £7,000 would be “We bebeve the information this movie areas.n which an wnividual, human or ‘The technical adviser on the fitm, Moan said,” Geposited with a phony check, and then co ta the criminal elemeat would ale, secures his possesioan” tad worked asa burglar for more than.a dee. S0me00e wool! retarn 26 hours later to be esed by them to deprive the general pblie _contineed, * ade, + withdraw 64,000, Sith aid. WASHINGTON — Whilé many people ave about eae Readers with scanners might wish to tune their attention to the following frequencies which are used by Ma Bell's maintenance crew: Primarily used in rurat and suburban areas- Base & Mobiles: 35.16 151.985 MHz Mobiles only: 43.16 158.34 HHz Primarily used in metropolitan areas: 451.30 451.325 451.35 451.40 451.45 451.50 In some heavily populated areas the following frequencies secondarily be used when all other frequencies are assigned: . 451.175 451.225 451.275 451.375 451.425 451.475 451.525 451.575 451.625 451.675 462.475 462.525 Additionally, the following frequencies are available in selected metro areas as noted: Boston MA 471.3125 to 471.3875 MHz . Los Angetes CA 473.3125 471.4125 507.3125 507.4125 MHz New York NY 472.9625 472.9875 478.9625 478.9875 Miz Mobile telephone operators, are most often found operating, on: 152,51 152,54 152.57 152.60 152,63 152,66 152,69 152,72 152,75 152,78-- there are also other frequencies used between 454,375 and 454.65. Not all fi ies used in all areas. Ship-to-shore phone calls most often heard ont 161.80 161,85 161,90 161.95 162,00 161,825 161,875 161.925 161,975. A listing of mobile operator & ship-to-shore frequencies used at spectfic locations is led TELE-COMM and is available for $3.95, Ped. from CRB Research. Box 56, Commack NY Postal breakthroughs Is very proud of It. ap He 4 if & ‘ i i i i & lealng between, milion { a! i iF if a i i | rf é Hl 8 | eagde zRe! i j rf i Four arrested in