Toshiba DKT2204-CT инструкция обслуживания

Telecommunication Systems Division June 2005 DKT2204-CT/DKT2304-CT Cordless Digital T elephones User Guide Digital Business T elephone Systems[...]

Pub lica tio n In form atio n T oshiba Ameri ca I nformat ion Sys tem s, Inc. , T elecommun ica tion Sys t ems Divis i on, rese rves the r ig ht , wit hou t pr ior n oti ce, to re vis e thi s i nfor mat ion p ubli cat ion for any reas on, inc l udi ng, but not limite d to , util iz a ti on of ne w advances in the st ate of tech nical ar ts or to si[...]

TOSHIBA AMERICA INFORMA TION SYSTEMS, INC. ( “ TA I S ” ) T elecommunication Systems Division License Agr eement IMPORT ANT : THIS LICENSE AGREEMENT (“AGREEMENT”) IS A LEGAL AGREEMENT BETWEEN YOU (“YOU”) AND T AIS. CAREFULL Y READ THIS LICENSE AGREEMENT . USE OF ANY SOFTWARE OR ANY RELA TED INFORMATION (COLLECTIVEL Y , “SOFTWARE”) I[...]

T oshiba America Information Systems, Inc. T elecommunication Systems Division Limite d W arranty T oshiba Amer ic a Info rmat io n Syst ems, Inc. , ( “ TA I S ” ) wa rrants that this voice pro cessing equi pment (ex cept for fuse s, lamps, a nd other co nsum ables) w il l, upo n deli ver y by T AI S or an auth ori ze d T AIS dealer to a retai [...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 i Contents Introduction O r gan i z a t i o n ... . ........ . ........ . ........ . ........ . ........ . ........ . .. ...... . ........ . ........ . ....... . . ........ . ........ . .. . ... v Co n v en t i o n s ... . ........ . ........ . ........ . ........ . ........ . ...[...]

Contents Chapte r 3 – Han dset Operati on ii Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Base Unit ................................ .................. ........................... ........................... .............. ..18 Charging Unit ....... ......... ......... ......... .................. ......... ......... ....[...]

Contents Chapt er 5 – T rouble shoot ing and Sp ecificati ons Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 iii Adding Voice Mai l to a Confere nce ..................... .................. ........................... ................34 Connecting Two Ou tside Lin es .......... ........................... .................. [...]

Contents Chapte r 5 – T rouble shoot ing and Spe cificati ons iv Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03[...]

Stra t a C T X DK T 2204-C T / DK T 2304-CT C o r d l ess D i g i tal T e l e p ho n es 06 / 03 v Introduction This gui de descri bes the fe atures a nd operati on of the S tra ta CTX DKT2204-CT an d DKT2304-CT Cordles s Digital T elephon es with S trata CTX Business T elephone System s. T o get t he most from your cordless telephon e, please read [...]

Introduction Conve ntions v i S t rata C T X DK T 2204- C T / DK T 2304-CT C o r d l e s s D i g i tal T e l e p h on es 06 / 03 Conventi ons Related Documents and Media Note Some doc uments liste d here may app ear in di fferen t versio ns on th e CD-R OM or in prin t. T o find th e mo st c urre nt v ers ion, chec k th e ve rsio n/da te i n the Pu[...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 1 The Grand T our 1 This chap ter famil iarize s you with t he St rata CTX DKT2204-CT and DKT2304 -CT Cordless Digital T elephone s (e.g., hand set, batt eries, ba se and char ging units, fixe d buttons ). Chapt er 4 – Feat ure Access Codes , beginn ing on page 37 c overs the fo[...]

The Grand T our T e chnology 2 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Some of its featur es are: • Liquid Cr ystal Dis play (LCD) t hat wraps u sing two li nes, tota l of 32 cha racters • Ringer an d handset v olume con trol • Single b utton acce ss to: Conf erence, Hol d, Redial, Message and T ransfer f eatures[...]

The Grand T our Applicati ons Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 3 Applications Y our cordle ss digit al telep hone brings mobility and product ivity t o off ice telepho nes. Greater call acc ess cuts down on “ teleph one ta g ” delays. Its compact des ign makes it easy to take with y ou. Benefits Y our cord le[...]

The Grand T our Hands et 4 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 • 900 MHz s pread- spect rum oper ation pro vides maximu m secu rity with a freq uency range t hat is al most impossi ble to sc an. Regular 900 MHz cordle ss digit al telepho nes are di ff icult to scan, but l ess so th an spread s pectrum. Anal og co[...]

The Grand T our Handset Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 5 DKT22 04-C T 1. Ringer Off Slide Switch 2. Message Display 3. Message ( Msg ) Button 4. Talk Button 5. Numeric Dial Pad 6. F2 Button 7. F1 Button 8. Microphone 9. Headset Jack 10. Volume ( R/VOL ) Button 11. MUTE Button 12. Hold Button 13. Conference/Tran[...]

The Grand T our Hands et 6 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 T able 1 DKT2204 -CT Fixed Button Desc ription Button De scription 7D O N Initiates a nd disco nnect s calls. 592/ Se lects ringer tone and volu me in st andby mo de and speaker volume i n talk mode. &KDQQHO Selects chann el while i n talk mode a[...]

The Grand T our Handset Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 7 DKT2304 -CT . Headset Jack . Display . . TALK Button . Numeric Dial Pad . F2 Button . F1 Button . Microphone 9. Hold Button 10. Conference/Transfer ( Cnf/Trn ) Button 11. Channel ( CH ) Button 12. Redial Button 13. F3 Button 14. F4 Button 15. Volume ( RIN[...]

The Grand T our Hands et 8 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 T able 2 DKT2304 -CT Fixed Button Desc ription Button De scription 7$ / . Initiate s and dis conne cts cal ls. 5,1*92/ Selec ts rin ger tone an d volume in stand by mode and sp eaker vo lume in t alk mode. &+ Selects chann el while i n talk mode [...]

The Grand T our LCD Dis play Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 9 LCD Display The LCD displ ay consists of two lines of 16 chara cters ea ch with four icons — Talk, Ringer Off, Low (Batter y) and Messag e Waiti ng . Base Unit The base un it can be us ed as a desk top or wall -mounted uni t (shown bel ow). There a[...]

The Grand T our Chargi ng Unit 10 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Charging Unit DKT22 04-C T The handse t comes wit h a char ging uni t (shown at right) that ha s two slot s. The front slot fu nctions a s a crad le for t he handset when idle a nd a ch arger f or the han d set b att er y . The re ar slot is for [...]

The Grand T our Cordless Di gital T elephone Stan dard Parts Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 11 Cordless Digit al T elephone Stan dard Parts Y our T osh iba cordless digital telephon e include s the fol lowing items: • Base unit • Handset • T elepho ne cord (t wo ft.) • T wo AC ada pters • Rechar geab [...]

The Grand T our Cord les s Di git al T el eph one St anda rd Par ts 12 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03[...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 13 Installation 2 Step 1: Review Safety Inst ructi ons ➤ Read and un derstand a ll produc t instruct ions. ➤ Follow al l warnings and instr uctions marked on the produc t. ➤ Cleaning precau tions: • Unplug thi s product from the wal l outle t before c leaning. • Do not u[...]

Installation Step 1: Review Saf ety Instru ctions 14 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 ➤ Operate this prod uct only f rom the type of power sourc e indicat ed on the ma rking label . ➤ Do not all ow anythin g to re st on the p ower cord. Do not locate t his produc t where the cor d could be da maged by pers o[...]

Installation Step 1: Review Sa fety Instructi ons Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 15 CAUTION! Changes or modificati ons to this produc t not expr essly appro ved by T oshiba, or operat ion of thi s pro duct in any way other than as detaile d by thi s User Guide , co uld void your aut hori t y t o operate t his p[...]

Installation Step 2: Selec t Lo catio n 16 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Step 2: Select Locati on 1. Select a locati on that is not subje ct to exc essive he at or humidi ty . Keep th e base unit and handset a way from sour ces of el ectrica l noise, su ch as motor s and fluore scent li ght ing . 2. Determine[...]

Installation Step 4: Conn ect T elephone Cab les Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 17 Step 4: Connect T elephone Cables Y our cordle ss teleph one must be connect ed to a dig ital telep hone PBX por t. ➤ T o connect as a stand-alone t elephone ➤ Connec t the modu lar jac k labeled “ Line In ” directly to t[...]

Installation Step 5: Conne ct and App ly Power 18 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Step 5: Connect an d Apply Power Base U nit 1. Plug the AC adapte r cord int o the AC a dapter input j ack on the b ase unit (shown at r ight). 2. Plug the AC adapter i nto a sta ndard 120V AC wall out let. 3. C heck to se e th at[...]

Installation Step 6: (Opti onal) W all Insta llation Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 19 Step 6: (Opt ional) W all Installat ion Important! You mus t place your DKT3 000- ser ie s telephone into 200 0-mode bef ore connecti ng the cordles s telephone ; otherwis e, the 3000-seri es teleph one will not work. See “[...]

Installation Step 6: (Opti ona l) Wal l In st all ati on 20 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Direct W a ll Mounting If you do not have a standard wa ll plat e, you can mount your tel ephone dir ectly on a wall. Bef ore mountin g your tel ephone, cons ider the following: • Select a locati on away from e lectric[...]

Installation Step 6: (Opti onal) W all Insta llation Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 21 Charging Unit W all Mounting The char ging u nit is al so design ed to be wal l mounted. Bef ore mounti ng your char ging uni t, conside r the fol lowing: • Select a locati on away from e lectric al cable s, pipes, or other[...]

Installation Step 6: (Opti ona l) Wal l In st all ati on 22 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 DKT2304-CT 1. Insert two mounting screws 1-1 /5 inc hes apart. Allow about 3/16 of an i nch between t he wall an d screw hea ds for mount ing the t elephone ( shown right ). 2. Pass the one end t hrough the hole o f the [...]

Installation Step 7: Rais e the Bas e Unit Antenn a Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 23 Step 7: Raise th e Base Uni t Antenna ➤ Before us ing you r handset, rais e the base unit ante nna to the vertica l positi on. Step 8: Install Hands et Battery Pack DKT22 04-C T 1. Remove the ba ttery cove r by pre ssi ng t [...]

Installation Step 9: Charge Batteries for First Tim e 24 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Step 9: Charge Batt eries fo r Fi rst T ime Important! Befor e using your hands et, the batte ry must be cont inuously char ge d for five ho urs. 1. Place t he handset in the cha rgi ng unit (s hown at rig ht). 2. E nsure t[...]

Installation Step 9: Charge Batteries f or First T ime Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 25 Step 1 1 : Attach Belt C lip (Optional) Note The belt clip is designed t o fit snu gly onto t he handset . 1. Snap the t ab out of the belt clip notc h on the to p of the handset . 2. Slide t he belt clip in to the spa ce w[...]

Installation Step 9: Charge Batteries for First Tim e 26 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03[...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 27 Handset Operation 3 This chapter c overs the handset vol ume contro l and va rious fun ctions re lated t o the handset itself . Handset Controls Earpiece V olume ➤ Press 59 2 / (on DKT2204-CT) or 5, 1*9 2/ (on DKT2304-CT) on the si de of the hands et durin g a call t o [...]

Han dset Oper atio n Handset C ontrols 28 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Handset Ringer T one and V olume ➤ Press 5 9 2/ (DKT2204 -CT) or 5,1*9 2/ (DKT230 4-CT) on the side o f the handset in standby mode to sel ect six r inger ton es and volu me combinati ons — Ring T ype A, B and C. Each ri ng type[...]

Han dset Op erat ion F1~F4 Fe ature But tons Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 29 Ringer Of f Slide Switch ( DKT2204-CT only ) The switc h on the si de of the h andset tu rns the ha ndset ri nger On or Of f (shown right). When the switc h on the si de of the handset is turne d to RII , the Ring Off i con disp lays[...]

Han dset Oper atio n Making a Call 30 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Making a Cal l Note If you ar e talki ng on a call and you hav e reached the range limit, move back in range wit hin 35 sec onds or the call is dropped. Internal Call 1. Pick up t he hands et and press 7D O N . Th e mes sag e “ $&48,5,1[...]

Han dset Op erat ion Answer a Call Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 31 Answe r a Call Internal Call 1. When you rec eive a cal l, the ha ndset rin gs and the L CD displays “ 67 [[ &$// ,1* ” (where the c alli ng part y ’ s stati on number sho ws). The ) LED blink s. 2. Pick up t he handset . The A[...]

Han dset Oper atio n Place a Call on Hold 32 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Place a Ca ll on Hold ➤ Press +ROG . ➤ T o res ume the ca ll ➤ Press +ROG or 7D O N . T ran sfer a Cal l ➤ Press &Q I7 U Q . The dialed nu mbers sa ved in tr ansfer memor y is shown on the display after t wo secon ds. Wh[...]

Han dset Op erat ion Conference Calls Using Strata CTX Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 33 Confer ence Call s Using Strat a CTX Y ou can con ference toge ther up t o eight par ties (i ncluding your own) - with up to s ix partie s being ext ernal CO or network l ines. The ac tual number of conferenc e partie s wit[...]

Han dset Oper atio n Addi ng Voice M ail to a Co nfer ence 34 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Adding V oice Mail to a Confere nce The Confer ence Master can add voi ce mail to a confer ence. This e nables par ticipants in a conf erence t o listen to or lea ve a voice mail message during a t elephone call. ➤ T[...]

Han dset Op erat ion Switch a Call t o Y our Cordless Digital T elephone Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 35 Switch a Cal l to Y our Cordless Digit al T elephone 1. Press +ROG on t he deskto p telephon e and pres s 7D O N on the DKT2204-CT/ DKT2304-CT handset . 2. Pick up t he cordle ss teleph one and pre ss the [...]

Han dset Oper atio n Switch a Call to the Desk T eleph one 36 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03[...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 37 Feature Access Codes 4 This chapter gi ves you al l of the c ordless digit al telep hone feat ures in al phabetic al order . Y our cord less d igital tel ephone pro vides many of the s ame featur es as a 200 0- series corded di gital te lephone. In add itio n to t he 0VJ , +[...]

Feature Access Co des Switch a Call to the Desk T eleph one 38 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Externa l Speaker Off Ext. but ton + Call Forward - See T able 4 on page 41 . Call Park Activate  + Orbi t Number Ret ri eve Ext. button + + Orbit Numb er System Orbits ~ Call Picku p Incoming - Group Pick u p Ext.[...]

Feature Acce ss Code s Switch a Call to the De sk T e lephone Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 39 Door Lock Con trol + Doo r Lock N umber Door Phone Calling + Doo r Phone No . (01~24, d epending on syste m size) Emergenc y Call Flash - Short Flash - Long LCD L anguage (Change) + Language No. LCR (Outgoing Call) M[...]

Feature Access Co des Switch a Call to the Desk T eleph one 40 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Emer gency Page - All Group s Answer for Exte rnal Group Page + Z one N umber Repeat Last Number Dialed  Spee d Dial Regi st er Statio n (0 0~9 9)  + Inde x N umber (00~99) Syst em  + Inde x N umber (000~099)[...]

Feature Acce ss Code s Switch a Call to the De sk T e lephone Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 41 T able 4 Call Forw ard Proced ure Feature But ton Sequence Call Forward Any Call - Internal and Incoming Line Calls: Forwards any call, w hether an internal c all or in comi ng line call . All Calls t o an ext. Press[...]

Feature Access Co des Switch a Call to the Desk T eleph one 42 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Busy No Answer to outsi de telepho ne no. Pres s ext . butt on + + outside li ne ac c ess co de + dest. tel ep hon e no. + (tone) + ti mer ( ~ ) (tone) Cancel Press ex t. button + (tone) Call Forward Any C all - Set f[...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 43 Call Forward - Incoming Line Call - Set for Another Station: Enables y ou to s et forw arding of inc oming li ne cal ls for a nother t elepho ne w ithin y our tel ephone syst em All Call s to an ex t. Press ext. button + (tone) + di al the oth er telepho ne ’ s ext. no. + ent[...]

Feature Access Co des Switch a Call to the Desk T eleph one 44 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03[...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 45 T roubleshooting and Specifications 5 This chapter c overs thes e topics : • T roub leshooti ng • Simultan eous conver sation ch annels • Range a nd perfor mance • Radi o i nte rfer enc e • T elepho ne line probl ems • More th an on e co rdl es s te lepho ne • Pri[...]

T roubleshooting and Specifications T roubl eshooting 46 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 T able 5 T roubleshooting Sugge stions Condition Suggestio n CHARGE LED does not light when handse t is plac ed on cha rging u nit. • Make sure the AC ad apter is p lugged in to the char ging unit and wall ou tlet. • Ma[...]

T roubleshooting and Specifications T roubles hooting Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 47 Low Battery Y our cordle ss teleph one comes equ ipped with one rechar geab le bat tery: • DKT2204-CT : BT2499 bat tery tha t provide s six hour s of talk and four da ys of standby t ime (ful ly char ged). • DKT2304-CT :[...]

T roubleshooting and Specifications T roubl eshooting 48 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Cleaning Charging Unit Con tacts T o main tai n a g oo d c ha rge, it is impo rta nt to cl ean all char ging contacts on the hand set, spare battery pack (DKT2204-CT on ly) and cha rgi ng unit abo ut once a month (sho wn ri[...]

T roubleshooting and Specifications Simultan eou s Co nv ers ati on Chann el s Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 49 Simulta neous Conve rsati on Chann els DKT22 04-C T The DKT2204-CT c ordle ss digital t elephone has 10 oper ating chan nels avai lable. A comm on m isco ncep tio n is tha t this limits a cus tome r [...]

T roubleshooting and Specifications Range and Perform ance 50 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Range an d Per form an ce The DKT2204-CT o perates u p to 1.1 mi les and t he DKT2304-CT .7 mil es from it s base in a complet ely unre stricte d test envir onment. T ypically , range s of 300 to 400 feet a re poss ibl[...]

T roubleshooting and Specifications Privacy Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 51 If you ar e having t rouble wi th your te lephone se rvice, you must firs t disconne ct your telepho ne to dete rmine i f it is the cause of your pr oblem. If you det erm ine th at it is th e cause, yo u must leave it disc onnected un[...]

T roubleshooting and Specifications Specific ations 52 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephones 06/03 Specificat ions For fre quencies, p ower requi rements , weight and size spec ificat ions, see Ta b l e 6 . T able 6 Specifi cations Featu re DKT2204- CT DKT2304-CT General Frequ ency Contro l Phase Loc k Loop Modul ati on Sp[...]

Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 53 Index A AC ad a pte r, 18 access code s, 37 acco unt code s, 37 advisor y messaging, 39 answerin g call s, 31 applica tions, 3 attac h be lt clip , 25 attenda nt consol e, 37 auto matic busy redi al, 37 cal lb ack can cel , 37 B backgrou nd music (BGM), 37 base uni t, 9 , 18 an[...]

Index E ~ S 54 Strata CTX DKT 2204-CT/DKT2304-CT C ordless Digital T elephone 06/03 E emer gen cy c all , 39 F featur e access c odes, 29 , 37 featur es, 2 fixed bu ttons, 6 , 8 flash , 39 H handset , 4 , 27 control s, 27 mute butt on, 28 ringe r m ute, 28 ringe r of f slid e swi tch , 29 ringer tone and vo lume, 28 vibrat e mode, 28 volume, 27 hol[...]

Ind ex T ~ W Strata CTX DKT2204-CT/DKT2304-CT Co rdless Digital T elephones 06/03 55 standar d parts, 11 star t a pp lica ti on, 40 swit ching cal ls between desk/c ordless, 35 T telepho ne line pr oblems, 50 trans fer c alls , 6 , 8 , 32 travel ling cla ss over ride, 40 troubl eshooting, 45 two (tandem) CO line conne ct ion , 34 U user pr ogrammin[...]