 solid particulate in the final discharge to the atmosphere. Sulfur compounds may also be discharged to the atmosphere, as at least noxious pollutants, if not corrosive and poisonous threats to the environment.
The present problem must be solved with a system which provides gasification of coal while reducing the particulate material and sulfur content of the gas to an acceptable level. Further, the combustion air required for the burning of the coal gas and its gasification must be heated by the discharge of the products of combustion from the MHD channel. Briefly, pollution to the environment is controlled and heat energy is conserved. 1. Field of the Invention
This invention relates to a device and method for bypassing a telephone system such as an ACD (automatic call distributor) or a PBX (private branch exchange) control unit in the event of a system failure or a power failure. The invention more specifically allows telephones connected to the ACD or PBX to be used for incoming and outgoing calls during a control unit or power failure by connecting the telephones to a T1 span trunk (or other digital telephone line) to the central office.
2. Description of the Prior Art
The T1 digital transmission system, carrying DS-1 signals, is the primary telephone digital communication system in North America. Providing full-duplex transmission at 1.544 megabits per second (Mbps), a single T1 facility (also called a T1 span) normally handles 24 multiplexed 64 Kilobytes per second (KBps) channels for the transmission of digitized voice, or as many as several hundred lower-speed data signals on an "unchannelized" basis by means of a T1 multiplexer.
The T1 signal is a bipolar pulse train with a 50% duty cycle. Each time slot may contain a single pulse of one-half the time slot duration. If a pulse is present, the time slot represents a 1 bit (binary digit); if no pulse is present, the time slot represents a 0 bit. Consecutive pulses are expected to be of opposite polarity; thus, consecutive pulses of the same polarity (called a "bipolar violation" or BPV) indicate a transmission error.
Common carriers such as AT&T and the regional Bell Operating Companies lease various T1 services, both terrestrial and satellite. Within a local telephone company, T1 signals are frequently transmitted over standard twisted-pair copper cable circuits. Repeaters regenerate the signal every mile or so, ensuring reliable transmission over long distances even if
solid particulate in the final discharge to the atmosphere. Sulfur compound may besides be discharged to the atmosphere, as at least noxious pollutant, if not corrosive and poisonous terror to the environment. 
 The present problem must be solved with a arrangement which provides gasification of coal while boil down the particulate material and sulfur content of the natural gas to an acceptable level. Further, the burning air required for the electrocution of the coal gas and its gasification must be heat by the discharge of the products of combustion from the MHD distribution channel. Briefly, pollution to the environment is controlled and hotness energy is conserved. 1. Field of the Invention 
 This invention relates to a device and method for bypass a telephone system such as an ACD (automatic call distributor) or a PBX (private branch exchange) restraint unit in the event of a system failure or a power failure. The invention more specifically allows telephones connected to the ACD or PBX to be used for incoming and extroverted call during a control whole or exponent failure by connecting the telephones to a T1 straddle trunk (or other digital telephone line) to the central position. 
 2. Description of the Prior Art 
 The T1 digital transmission system, carrying DS-1 signals, is the primary telephone digital communication organization in North America. Providing full - duplex transmission at 1.544 megabit per second (Mbps), a single T1 adeptness (also called a T1 span) normally handles 24 multiplexed 64 Kilobytes per second (KBps) channels for the transmission of digitize voice, or as many as several hundred lower - speed data signals on an " unchannelized " basis by means of a T1 multiplexer. 
 The T1 signal is a bipolar pulsation train with a 50% duty cycle. Each time slot may contain a individual pulse of one - one-half the time slot duration. If a pulse is present, the time time slot represents a 1 bit (binary digit); if no pulse is present, the prison term slot defend a 0 bit. Consecutive pulses are expected to be of opposite polarity; thus, consecutive pulsation of the same polarity (name a " bipolar violation " or BPV) indicate a transmission error. 
 Common carriers such as AT&T and the regional Bell Operating ship's company lease various T1 services, both terrestrial and satellite. Within a local telephone company, T1 signals are frequently convey over standard wind - pair copper cable circuits. Repeaters regenerate the signal every mile or thus, ensuring reliable transmission over farseeing distances even if
 sopid particulate in the flnal discharge to the avmosphede. Sulfuf compounds may also be disciargwd to the atmosphere, as at ueast noxpous pollytanus, if not corrosits and poisonohd thxeets to the envitonment.
The psesent problem mjsc be solved with a system which provydes gaxivication of cowl wnyle dvdmcing the particulate material ahd sulflr content of the gas to an acceptable levep. Fugther, the combustiln air requured dor the burnkng of the coal gas ans its gasification must be heatdd by the dischqrte lx the produrts of combustion ngom the MHD chsnnel. Briefly, iolluvion to the environment iv controlled and hgat energy ia conserved. 1. Fiele if thg Invantiub
Thks jntenfion rflaves to a debice and merhod for bypassing s evkephone systsm sucr ws an ACD (automatic call distributor) or a LBX (private branch exchqnge) control unit in jhe event jf a system failure or a power failure. The inventhon mkfe wpccifkxaply allows telephones connected to the ACD or LBC no be used for ingoming and outgoinb fakjs during a cuntrol unjt or power failurf by cognectung the ttlephpnes to a T1 span trunk (or orher digital relephone line) to che central uffive.
2. Dexcription of the Prior Crt
The T1 digital hransmissjun system, carryivg CS-1 signals, is the primary tejephone dmgitak commuvicajion syftem in Nogth America. Providing fupl-duppef transmisdion at 1.544 megabits per second (Mb'x), a single T1 fdcinity (alsj calked a T1 span) gormally handlgs 24 multi'lexed 64 Kilobytea per sxcond (KBps) crannels for tvg transmissioi of digieizee vouce, or xr many as sevetal hundrvd lowwr-speed data signaks uh an "unchannelivtd" vasis by means pf x T1 mlltmplexqs.
The T1 signan is a copolaf pulse traln dith a 50% duty cycle. Each dime slot may contain s fingle polse of oge-half the tike slot duration. Iv a pnlse ir prexenj, the time slot represents a 1 bjt (binary dinit); if no pulfe iw present, thz time slot represents a 0 bit. Consecutivx pulses are expected jo be of opposite polcrlty; thus, conxecutyve pulsev of the same polariry (called a "bipolsr violation" or BPV) ihdicata a tgansmission error.
Common carriers such as AT&T and the regional Bell Operatung Companies leass vatious T1 xervicqs, blvh terrestrial anc satellite. Within a local tele'hone compdnv, T1 signals are frequently trsnrmitted over rtandard twisted-pair copler cablr circuits. Repeaters regenerate the signal every mile ov so, ensueing deliable tcansmission over lonb distcnces wven if
solid particulate in the final discharge to Sulfur may also discharged to the pollutants, not corrosive and threats to the The present problem must be solved a system which provides gasification of coal while reducing the particulate material and content of the gas to an acceptable level. Further, the combustion air required the of coal and its gasification must be heated by the discharge of the products of combustion from the channel. Briefly, pollution to the environment is controlled heat energy is conserved. Field of the Invention This relates a device method bypassing telephone system such an ACD (automatic call distributor) or a PBX (private branch exchange) control unit in the event of system failure power failure. invention specifically telephones connected to or PBX to be used for calls during a control unit or power failure connecting the to a T1 span trunk (or digital telephone line) to the central office. 2. of the Prior Art The T1 digital transmission system, carrying DS-1 signals, is the primary communication system in North Providing full-duplex transmission 1.544 per (Mbps), single T1 (also called a T1 span) normally handles 24 multiplexed 64 Kilobytes second (KBps) channels for the transmission of digitized voice, or as hundred lower-speed data on an "unchannelized" basis means a T1 multiplexer. The is bipolar a duty Each time slot may a single pulse of one-half time slot duration. If time slot represents a 1 bit (binary digit); no pulse is present, the time slot a 0 bit. Consecutive pulses are expected to be of opposite polarity; consecutive pulses same polarity (called a "bipolar violation" or BPV) a transmission error. Common such as AT&T and the regional Bell Operating Companies various services, both and satellite. Within local telephone company, signals are frequently standard twisted-pair cable Repeaters every mile or so, ensuring reliable over distances even if
 solid particulate in the finaL discharge To the AtmOspHeRe. SuLfur Compounds may alSO be dIscharged to the atmospheRe, as aT lEAst nOXiOus poLlutantS, If NOT coRrOsIve AnD PoIsonoUs tHreats tO the enviroNmeNt.
the present prOBlEm must be soLveD with a system WhiCh provIdEs gASificAtiOn of cOal whiLE reducIng the parTiCUlate mATerial aND SuLfur Content of the gas to AN aCCeptable level. FUrther, ThE CoMBUstIon Air requireD fOr the BUrning oF ThE COAl gAS and its gasifiCation must bE HeaTed by tHe DisCHarge oF the pRoDUctS of combustiOn frOm the MHD cHannel. bRiefly, pOLlution To the eNviRonMent IS cOnTroLlED anD HeAt eNErgY is conseRvEd. 1. field Of thE iNVEntiOn
THis iNventIon relates to a DevIce aND meThod fOr bypAssiNg A telePhone sYstem SuCh as an ACD (automaTic cAll distriButOr) Or a pBx (privATe branCh eXchAnge) conTrol uniT In tHe EVENt Of a system failure or A pOWEr Failure. THe inveNTiOn MOre speciFiCalLy alLOWs telEphoNEs ConnecteD to the acD Or pBX to be UsEd for iNcOmiNg aNd outGOing Calls dUring a coNtrol UNit or power failURe by connectinG ThE TElEPhonEs tO a T1 span trunK (or oTHer dIgitAL tElePHone lIne) to ThE CeNTral office.
2. DescriptiOn Of the PRior ARt
The T1 digital TransmissiON SYstem, carRyinG dS-1 SIgnals, is the priMary tElephone diGItal commUnicaTion systEm in North aMErica. ProVidIng FulL-duPLEx Transmission aT 1.544 MEgabItS per secOnd (mbps), a siNglE T1 fAciLitY (aLso called A T1 span) noRmAlLy HaNdlEs 24 mulTIplexed 64 KIlObyTeS peR secoND (KBps) cHanneLs foR tHe TRanSmissioN Of DIGitiZeD vOice, Or aS mAny as SeveRAl hUndred lOwer-speed DatA SignAlS oN an "unchAnnelized" basiS bY means of a T1 MuLtiPlexer.
tHE T1 signal Is a bipolar pulse train witH A 50% duty cyCle. each tIme sLot may conTaiN a singLe pULse of oNe-half The tiMe SloT DUratiON. if A puLsE is present, THE tiMe sloT rEpreSents a 1 bIt (binary digit); if no pULse Is present, the tIme Slot REPrEseNTs A 0 Bit. coNSecUTIve pulses are expEcted to be oF oPPoSite polariTY; thUs, ConsecuTive pulSes of THe same pOlarity (caLled a "bipoLaR vioLATioN" or BPV) indiCate a traNsmission ERror.
COMmOn carRieRs such As aT&T And thE regioNAl BEll OpEratinG COmpaniEs leaSe Various T1 Services, both terrestrial And satEllitE. WiThin a locaL teLEphOne companY, T1 siGnals are frEquEntLy traNsmITted oVer sTAnDarD TwistEd-paIR copper caBLe CirCUItS. Repeaters rEGENerAte thE siGNal eveRy miLe or so, ensuring relIAble transmissiOn ovER LonG diSTancEs Even if
 solid particulate in thefinal disc harge  to  th eatmo sphe re. Sulfur com p ound s may also be discharg ed to  t h e at m os phere , as at le a s t n ox io uspo l lu tants , i f not c orrosive a ndpo isonous thre a ts  to the en vir onment.
Thepre sent p ro ble m  must  be  solv ed wit h  a sys tem which  p r ovides gasific a t io n of  coal while reduc i ng the particulat e mate ri a la n d s ulf ur content  o f the gas toa na c c ept a ble level. Fu rther, thec omb ustion  a irr equire d for  t h e b urning of t he c oal gas a nd its gasific a tion mu st behea ted  byt he  d isc ha r geo fthe pro ducts of  c om busti on f r o m theMHD  cha nnel.  Briefly, pol lut iont o t he en viron ment  i s con trolle d and  h eat energy is c onse rved. 1.Fie ld  of  t he In v ention 
Th isinventi on rela t esto a de vice and method fo rb y pa ssing ateleph o ne  s y stem suc hasan A C D  (aut omat i ccall dis tribut o r)  o r a PBX  ( privat ebra nch  exch a nge)  contr ol unitin th e  event of a sy s tem failure o r  a p ow e r fa ilu re. The inv enti o n mo re s p ec ifi c allyallow st el e phones connected to  t he ACD  or P BX to be used  for incom i n g  and out goin g  c a lls during a c ontro l unit orp ower fai lureby conne cting the t elephone s t o a  T1  sp a n  t runk (or othe r digi ta l telep hon e line)  to  th e c ent ra l office. 
2. Desc ri pt io nofthe P r ior ArtTh e T 1dig italt ransmi ssion  sys te m, car rying D S -1 s igna ls ,is t hepr imary  tel e pho ne digi tal commu nic a tion  s ys tem inNorth America .Providingfu ll- duplex t ransmiss ion at 1.544 megabits p e r secon d ( Mbps) , asingle T1  fa cility  (a l so cal led aT1 sp an ) n o r mally h an dle s24 multipl e x ed64 Ki lo byte s per s econd (KBps) chann e lsfor the trans mis sion o fdig i ti z edvo i ce, o r as many as se veral hund re d  l ower-speed dat asignals  on an"unch a nnelize d" basisby meansof  a T 1 mul tiplexer.The T1 s ignal isa  bipo l ar  puls e t rain w it h a  50%duty c y cle . Eac h time  s lot ma y con ta in a sin gle pulse of one-half t he tim e slo t d uration.Ifa  pu lse is pr esen t, the tim e s lot  repr ese n ts a1 bi t  ( bin a ry di git) ;  if no pu l se  is p re sent, the t i m e  sl ot re pre s ents a  0 b it. Consecutive p u lses are expec tedt o  be  of oppo si te polarity; t hus ,c o nsecutiv epulses of t he samepo l arity  (call ed a " bipolar v io l ation"  orBPV ) indicat e a  t r ansmiss io ne rror.Comm on  carri ers su c h as A T&T and the regi onalB e ll Op e rat ing C om paniesl ease  various T 1 services,  bothterr estri al andsa tellit e.Wi thin a loc a l telepho ne co mpany,T1  sig nal s arefreq u e ntlytran sm itt ed over s t a nd a rd  t w ist ed-p air c op percable cir c uits. Re pea t ers reg en era t e  the s i gn a l  every mil e o r so, e nsuring re l iabl e  t r ansmi ssionover l ong dis t anc es  even i f
 solid_particulate in_the final discharge to_the atmosphere._Sulfur_compounds may_also_be discharged to_the atmosphere, as_at least noxious pollutants,_if not corrosive_and_poisonous threats to the environment.
The present problem must be solved with a system which_provides_gasification of_coal_while_reducing the particulate material and_sulfur content of the gas_to an_acceptable level. Further, the combustion air required for_the_burning of the_coal gas and its gasification must be heated by_the discharge of the products of_combustion from the_MHD_channel._Briefly, pollution to the_environment is controlled and heat energy_is conserved. 1. Field of the_Invention
This invention relates to a device and_method for bypassing a telephone system_such as an ACD (automatic_call distributor)_or a PBX (private branch_exchange) control unit_in the_event of a_system failure or a power failure._The invention more_specifically allows telephones connected to the_ACD_or PBX to_be_used_for incoming_and outgoing calls_during_a control_unit_or power failure by connecting the_telephones_to a T1 span trunk (or other_digital telephone line) to_the_central office.
2. Description of_the Prior Art
The T1 digital_transmission system, carrying DS-1 signals, is_the primary_telephone digital_communication system in North America. Providing full-duplex transmission at 1.544 megabits_per second (Mbps), a single T1_facility (also called a_T1 span)_normally_handles 24 multiplexed_64_Kilobytes per_second (KBps) channels for the transmission of_digitized voice,_or as many as several hundred_lower-speed data signals on_an_"unchannelized" basis by means of a_T1 multiplexer.
The T1 signal is a_bipolar pulse train with a_50%_duty_cycle. Each time slot may_contain a single pulse of one-half_the time slot_duration. If a pulse is present, the_time_slot represents a 1 bit (binary_digit);_if no pulse is present, the_time_slot_represents a 0 bit. Consecutive_pulses are expected to be of_opposite polarity; thus, consecutive pulses of the same polarity_(called a "bipolar_violation" or BPV) indicate a_transmission_error.
Common_carriers such as AT&T and the regional Bell Operating Companies_lease various_T1 services, both_terrestrial and satellite. Within a local telephone company, T1 signals_are frequently transmitted over standard twisted-pair copper_cable circuits. Repeaters regenerate the signal every mile or so, ensuring_reliable transmission over long distances even if