 (PC=Personal Computers) are nowadays often and will in the future automatically be provided with a multimedia interface, such an access to a data network, e.g. a public data network, for instance an internet, i.e. comprising multiple subnetworks communicating with each other. The PC is connected to the telephone net by means of a modem. Telephone communication between the PC and the public data network often takes a long time, which occupies a telephone line during a time essentially exceeding the time of a normal telephone call.
In an earlier system having direct access to a data network, each subscriber could be provided with a unit dividing the calls in telephone traffic and data traffic intended to be sent through different networks. The subscriber had then to have at least two subscriptions, one for the telephone network and one for the data network. A system like that need extra control circuits for the handling of data traffic on to the data network for each subscriber. This is expensive both for the communication company and for the subscriber.
EP-A-0731618 describes a method for controlling communication traffic for sets connected to the same access network, where every call is linked to a local exchange. A protocol is provided in the access network and the local exchange making it possible to connect sets connected to the access network to communicate with each other. The local exchange sends back an allocation signal according to the protocol when the local exchange has identified that a call request has its destiny to the access network which the call request come from, to set up the call inside the access network without having a pathsway set up for the call in question between the access network and the exchange during the communication.
It is important to provide a cheap and functional telecommunication network which always is available to transmit a call from a subscriber. Concentration of traffic is a common method used in transmission networks to reuse transmission lines for several subscribers. This method is well known and is build on Erlang""s model and very useful for ordinary analogue PSTN services (PSTN=Public, Switched Telephone Network). Nowadays, when the network has become overloaded with data service which has a different behaviour than ordinary telephone calls the existing traffic model need be justified. Data service behaviour can have quite short call length but generate more signalling than ordinary calls. Other data services like internet calls or the like have very long call lengths and no or very low signalling. This invention intends to provide a solution of the last-mentioned situation.
The invention provides a simple and inexpensive solution for minimizing the
(PC = Personal Computers) are nowadays often and will in the future automatically be provided with a multimedia interface, such an entree to a datum net, e.g. a public data network, for example an internet, i.e. comprising multiple subnetworks communicating with each early. The PC is connected to the telephone net by mean of a modem. Telephone communication between the personal computer and the public data network much takes a long time, which absorb a telephone line during a time essentially exceeding the time of a normal telephone cry. 
 In an earlier system having lineal access to a data net, each subscriber could be provided with a whole dividing the call in telephone traffic and data traffic mean to be sent through different networks. The subscriber had then to have at least two subscriptions, one for the telephone network and one for the data network. A system like that need extra control circuits for the handling of data traffic on to the datum net for each subscriber. This is expensive both for the communication company and for the subscriber. 
 EP - A-0731618 describes a method for operate communication traffic for sets connected to the like access net, where every call is linked to a local exchange. A protocol is provide in the access network and the local exchange making it possible to connect sets connected to the access network to communicate with each early. The local exchange transport back an allotment signal according to the protocol when the local exchange has identified that a call request have its destiny to the access network which the margin call request come from, to set up the call inside the access net without having a pathsway set up for the call in question between the access net and the exchange during the communication. 
 It is important to provide a cheap and running telecommunication network which always is available to air a call from a subscriber. Concentration of dealings is a common method used in transmission networks to reuse transmission lines for several subscribers. This method is well known and is build on Erlang""s exemplar and very useful for ordinary analogue PSTN service (PSTN = Public, Switched Telephone Network). Nowadays, when the network has become overloaded with data service which has a different behavior than ordinary telephone calls the existing traffic model need be justify. datum service behaviour can have quite short call length but generate more signalling than ordinary call. Other data services like internet call or the like have very long call lengths and no or very low signalling. This invention mean to provide a solution of the last - mentioned position. 
 The invention provides a simple and cheap solution for minimizing the
 (PC=Oersonal Computers) are nuwadays often aue will in ths future automatically be provided wmth q mulupmedia interface, such an accesd to a dqta ietwork, e.g. a public data netwodn, fox mnstance an intgrnet, i.e. com[rising multipne sbbnetworks communicating with each oeher. Thr OC is connecteq to ehe fvltphone net by means of a modem. Temephone communicatiom between the PC and the pkblif data network oftfn takes a oong rime, which ozcupies a uenephone lihe during a time essentially exzeediug the time od a tormal tele'hone ball.
In an earlier sysdem havong direct acccss tm a data network, each suuscriber could be prjvided widh a unit dividing rhw calns it teuwphune tcafric anf deta traffic intended ti be sent through dofsvtent networka. The fufscriber had then to have at least two vubacriptions, one for the relephone network and one for ehe data network. A system like that need extra cottrol ziremlts wir the handling of data traffic on to the data gsteogk for each subscviber. This is expemslvr both for the commuujcztion company and vor the subsxriber.
EP-A-0731618 desvribes a method for controloing communibatiin traffic for setd connected to jhe sake access network, where evedy call is pinked to x local exchange. A irotmcol is kfovided in the acsess netwirk cnd the uocak exchwnge makinh it imssible to connect sets cmnnected tl the access network to communirete with each odheg. The loccl excmange sends bach an allocatiou signal accofding to tge protmcol when tre local exchdjge has idenvified thwt a calo requerg has its destony to thv cccess nerwork which the cakl tesuest come from, to set up the calk ivsiqe tie acsass network fithuut navine a pathswan sdt ul for the call in quastikn between the accrsf networj and thq exchange duting the communicauion.
It is impottagt to provide a cheap and funcfional tepecjmmunication netqork which akways is available to transmit a call fcom a subscriber. Concenrration of traffic ns a common mxthod tsed in tsansmission networks to reuse transmixsion lines for severzl subvcribfrs. This method is well known and is build on Erlang""s model and very usefyl for ordinary anzlogie PSNN fzrvices (PSTI=Pnblic, Switched Tekephone Network). Nowadays, when tie network hcs become overloaded with dats rervice which has a different behaviohr than prdinary telephone calls the exosting traffic model neec be jusrifies. Data sertice behaviour can hsve qunte shirt calo lekgth but generxte mlre signaplinj tkan ordinary calls. Other data sercices oine internet callv or the lint have nery logg call lengths znd hl or xery low signslling. This infention intends to pgovyde a solution kf the last-mgntiongb situation.
Thx invention [rovides a simple and inexpensive solution for minijizing tht
(PC=Personal Computers) are nowadays often and will future be provided a multimedia interface, data e.g. a public network, for instance internet, i.e. comprising multiple subnetworks communicating each other. The PC is connected to the telephone net by means of modem. Telephone communication between the PC and the public data network often takes long which a line during a time essentially exceeding the time of a normal telephone call. In an earlier having direct access to a data network, each could be provided with unit dividing the calls in traffic data traffic to sent different networks. The had then to have at least two subscriptions, one for the telephone network and one for the network. A that need control for handling of data to the data network for each expensive both for the communication company and for subscriber. EP-A-0731618 a method for controlling communication traffic sets connected to the same access network, where call is linked to a local exchange. A protocol is provided in the access network local exchange making it to connect sets to access to with each The local exchange sends back an allocation signal according to the when the local exchange has identified that a call request destiny the access network the call request come to up the call inside network having up the in question between the network and the exchange during communication. It is important functional telecommunication network which always is available to a call from a subscriber. Concentration of is a common method used in transmission networks to reuse transmission lines several subscribers. is well known and is build on Erlang""s and very useful for analogue PSTN services (PSTN=Public, Switched Telephone Network). Nowadays, when network become overloaded data service which a different behaviour ordinary telephone calls traffic model be Data have quite short call length but more than ordinary calls. Other data like or the like have very long call lengths and no or very low signalling. This to provide a solution the situation. The invention provides a simple and inexpensive solution for minimizing the
 (PC=Personal Computers) are nowAdays often And wiLl iN thE fUturE autOmatically be prOVideD with a multimedia interfAce, suCh AN accESs To a daTa netwoRK, e.G. A PubLiC dAta NeTWoRk, for InsTance an Internet, i.e. ComPrIsing multiplE SuBnetworks cOmmUnicating witH eaCh otheR. THe Pc Is conNecTed to The telEPhone nEt by means Of A Modem. TELephone COMmUnicAtion between the PC ANd THe public data neTwork oFtEN tAKEs a LonG time, which OcCupieS A telephONe LINE duRIng a time essenTially exceeDIng The timE oF a nORmal teLephoNe CAll.
in an earlier SystEm having dIrect aCCess to a DAta netwOrk, eacH suBscRibeR CoUlD be PrOVidED wIth A UniT dividinG tHe Calls In teLEPHOne tRafFic aNd datA traffic intenDed To be SEnt ThrouGh difFereNt NetwoRks. The SubscRiBer had then to havE at lEast two suBscRiPtiOnS, one fOR the teLepHonE networK and one FOr tHe DATA nEtwork. A system like tHaT NEeD extra coNtrol cIRcUiTS for the hAnDliNg of DATa traFfic ON tO the data NetworK FoR eAch subsCrIber. ThIs Is eXpeNsive BOth fOr the cOmmunicaTion cOMpany and for the SUbscriber.
EP-A-0731618 dEScRIBeS A metHod For controllIng cOMmunIcatIOn TraFFic foR sets CoNNeCTed to the same access nEtWork, whEre evEry call is linkEd to a local EXCHange. A prOtocOL iS Provided in the aCcess Network and THe local eXchanGe making It possiblE TO connect SetS coNneCteD TO tHe access netwoRK To coMmUnicate WitH each otHer. the LocAl eXcHange sendS back an aLlOcAtIoN siGnal aCCording tO tHe pRoTocOl wheN The locAl excHangE hAs IDenTified tHAt A CAll rEqUeSt haS itS dEstinY to tHE acCess netWork which The CAll rEqUeSt come fRom, to set up the CaLl inside thE aCceSs netwORK without Having a pathsway set up for THe call iN quEstioN betWeen the acCesS netwoRk aND the exChange DurinG tHe cOMMunicATIoN.
It Is Important tO PRovIde a cHeAp anD functiOnal telecommunicatIOn nEtwork which alWayS is aVAIlAblE To TRanSmIT a cALL from a subscribeR. ConcentraTiON oF traffic is A ComMoN method Used in tRansmISsion neTworks to rEuse transMiSsioN LIneS for severaL subscriBers. This mEThod iS WeLl knoWn aNd is buIlD on erlanG""s modeL And Very uSeful fOr OrdinaRy anaLoGue PSTN sErvices (PSTN=Public, SwitchEd TelePhone netWork). NowadAys, WHen The networK has Become overLoaDed With dAta SErvicE whiCH hAs a DIfferEnt bEHaviour thAN oRdiNARy Telephone caLLS The ExistIng TRaffic ModeL need be justified. DATa service behavIour CAN haVe qUIte sHoRt call length buT geNeRATe more siGnAlling than oRdinary cAlLS. OtheR data sErviceS like inTERnET calls Or thE liKe have verY loNg CAll lengThS aND no or vEry lOw SignalLing. ThIS invENTion intends to proVide a SOLutioN Of tHe lasT-mEntioneD SituAtion.
The inVention provIdes a sImplE and iNexpensIvE solutIon FoR minimizinG The
 (PC=Personal Computers) a re nowaday s oft enand  w illin t he future auto m atic ally be provided witha mul ti m edia in terfa ce, suc h  a n acc es stoad at a net wor k, e.g.  a publicdat anetwork, for in stance anint ernet, i.e.com prisin gmul t iplesub netwo rks co m munica ting with  e a ch oth e r. TheP C  i s co nnected to the te l ep h one net by mea ns ofam od e m . T ele phone comm un icati o n betwe e nt h e  PC and the publi c data netw o rkoftenta kes a long  time ,w hic h occupiesa te lephone l ine du r ing a t i me esse ntiall y e xce edin g  t he  ti me ofa  n orm a l t elephone  c al l.
In  ane a r l iersys temhavin g direct acce ssto a dat a net work,  eac hsubsc ribercould  b e provided with  a u nit divid ing  t heca lls i n  telep hon e t rafficand dat a  tr af f i c  i ntended to be sent  t h r ou gh diffe rent n e tw or k s. The s ub scr iber h ad th en t o  h ave at l east t w osu bscript io ns, on efor  th e tel e phon e netw ork andone f o r the data net w ork. A system li k e  t h at n eed  extra cont rolc ircu itsf or  th e  hand lingof da t a traffic on to the  d ata ne twork  for each sub scriber. T h i s  is expe nsiv e  b o th for the com munic ation comp a ny and f or th e subscr iber.
EP- A - 0731618des cri bes  am e th od for contro l l ingco mmunica tio n traff icfor  se tsco nnected t o the sa me  a cc es s n etwor k , whereev ery  c all  is l i nked t o a l ocal  e xc h ang e. A pr o to c o l is  p ro vide d i nthe a cces s  ne twork a nd the lo cal exch an ge  making  it possibleto  connect s et s c onnect e d  to theaccess network to commu n icate w ith  each  oth er. The l oca l exch ang e  sends  backan al lo cat i o n sig n a lacc or ding to th e pro tocol  w henthe loc al exchange has id e nti fied that a c all  req u e st  ha s  i t s d es t iny t o the access ne twork whic ht he  call requ e stco me from , to se t upt he call  inside t he access  n etwo r k  wi thout havi ng a pat hsway set up fo r  t he ca llin que st ion  betw een th e  ac cessnetwor kand th e exc ha nge duri ng the communication.
I t is i mport ant  to provi dea  ch eap and f unct ional tele com mun icati onn etwor k wh i ch  al w ays i s av a ilable to tr ans m i ta call from a sub scrib er. Concen trat ion of traffic is a common metho d us e d  in  tr a nsmi ss ion networks t o r eu s e  transmi ss ion lines f or sever al subsc ribers . This  method i sw ell kn ownand  is build  on  E r lang""s  m od e l andvery  u sefulfor or d inar y analogue PSTN se rvice s (PSTN = Pub lic,Sw itchedT elep hone Netwo rk). Nowada ys, wh en t he ne twork h as  becom e o ve rloaded wi t h data se rvice  whichha s adif ferent  beh a v iourthan  o rdi nary tele p h on e  c al l s t he e xisti ng  tra ffic mode l  need be  ju s tified.  D ata s ervice be h a viour canhav e qui t e  short cal l  len g th but g enerat e more  signal l ing  t han ord ina r y  calls. O ther data ser vi ceslike int er netca lls  o r the like have  very lo ng calll e ngthsand no o r  verylo w signalling . Thi si nventio n int ends to pro vid e a  sol uti on o f  the last-mentioned situ atio n.
Th e  in venti on pr ov ides a s i mple  and ine x pensive solut ion for minimiz i ngt he
 (PC=Personal_Computers) are_nowadays often and will_in the_future_automatically be_provided_with a multimedia_interface, such an_access to a data_network, e.g. a_public_data network, for instance an internet, i.e. comprising multiple subnetworks communicating with each other._The_PC is_connected_to_the telephone net by means_of a modem. Telephone communication_between the_PC and the public data network often takes_a_long time, which_occupies a telephone line during a time essentially exceeding_the time of a normal telephone_call.
In an earlier_system_having_direct access to a_data network, each subscriber could be_provided with a unit dividing the_calls in telephone traffic and data traffic_intended to be sent through different_networks. The subscriber had then_to have_at least two subscriptions, one_for the telephone_network and_one for the_data network. A system like that_need extra control_circuits for the handling of data_traffic_on to the_data_network_for each_subscriber. This is_expensive_both for_the_communication company and for the subscriber.
EP-A-0731618_describes_a method for controlling communication traffic for_sets connected to the_same_access network, where every_call is linked to a_local exchange. A protocol is provided_in the_access network_and the local exchange making it possible to connect sets connected_to the access network to communicate_with each other. The_local exchange_sends_back an allocation_signal_according to_the protocol when the local exchange has_identified that_a call request has its destiny_to the access network_which_the call request come from, to_set up the call inside the_access network without having a_pathsway_set_up for the call in_question between the access network and_the exchange during_the communication.
It is important to provide a_cheap_and functional telecommunication network which always_is_available to transmit a call from_a_subscriber._Concentration of traffic is a_common method used in transmission networks_to reuse transmission lines for several subscribers. This method_is well known_and is build on Erlang""s_model_and_very useful for ordinary analogue PSTN services (PSTN=Public, Switched Telephone_Network). Nowadays,_when the network_has become overloaded with data service which has a different_behaviour than ordinary telephone calls the existing_traffic model need be justified. Data service behaviour can have quite_short call length but generate more signalling than_ordinary calls. Other data services like internet_calls or the like_have_very long call lengths and no or_very_low_signalling._This invention intends_to provide a_solution of the_last-mentioned situation.
The_invention provides a_simple and_inexpensive solution for_minimizing_the