council recommend decemb coordin introduct integr servic digit network isdn european commun eec council european commun regard treati establish european econom commun regard propos commiss regard opinion european parliament regard opinion econom social committe recommend eec call introduct servic basi common harmon approach field telecommun resourc offer telecommun network util full maintain commun worldwid competit light rapid pace develop telecommun sector technic resourc afford integr servic digit network isdn make provid rang harmon compat servic commun user creat mean commun sound written word imag current invest digit switch digit transmiss equip member state make envisag develop integr servic digit network coordin polici introduct isdn make establish european market telephon data process termin capabl creat virtu size indispens develop condit enabl european telecommun industri maintain increas share world market implement council direct eec march lai procedur provis inform field technic standard regul consider council direct eec juli initi stage themutu recognit type approv telecommun termin equip council regul eec octob institut commun programm develop favour region commun improv access advanc telecommun star programm make potenti commun financi instrument order promot develop member state infrastructur implement polici pai proper attent user privaci protect implement polici lead closer cooper commun level telecommun industri administr recogn privat oper agenc offer telecommun servic hereinaft refer telecommun administr favour opinion deliv senior offici group telecommun sogt detail recommend drawn analysi forecast group gap provid strateg basi develop isdn enabl european user commun effici econom favour opinion recommend deliv telecommun administr european confer postal telecommun administr cept telecommun equip manufactur member state recommend telecommun administr implement detail recommend coordin introduct integr servic digit network isdn commun annex implement recommend focus standard implement interfac timet set network penetr object compat commerci strategi oj opinion deliv decemb publish offici journal opinion deliv septemb publish offici journal oj oj oj telecommun administr continu harmon work cept object timet drawn annex specif isdn complet telecommun administr undertak measur facilit coordin introduct isdn relat implement cept specif equip concern isdn commun financi instrument recommend account framework intervent invest requir isdn implement member state govern encourag telecommun administr implement recommend member state govern inform commiss end year end measur problem encount implement recommend progress work activ examin commiss sogt set council novemb order ascertain prioriti implement programm satisfactorili achiev progress work subject annual report commiss european parliament brussel decemb council presid shaw annex detail recommend coordin introduct integr servic digit network isdn commun recommend establish rapid converg european activ introduct isdn recommend relat dissoci gener philosophi member state agreement isdn subscrib access kbit mbit consid natur evolut telephon network profession residenti subscrib exist structur current telephon network fundament chang evolut decis account speed market penetr depend numer econom social cultur factor impact network dissemin actual penetr servic point time clear member state profession sector significantli greater expect requir servic residenti sector profession sector penetr suppli multiservic pabx isdn access sector major submiss termin connect isdn basic access pabx compat necessit common standard public privat network signific demand residenti sector develop sustain polici anticip suppli launch period attain critic mass servic penetr creat effect snowbal reaction polici support market tarif activ stimul demand definit interfac public privat network standard physic interfac isdn termin public network recommend ccitt refer point accord ccitt cept recommend case basic access kbit physic interfac refer point ident termin interfac offer pabx manufactur common design termin achiev statement impli basic access nt function provid public network oper agreement urgent need telecommun administr framework cept standard physic interfac refer point primari rate access kbit transit phase year pabx multiservic standard pabx offer addit standard interfac manufactur repres consult agreement point servic defin detail end order provid member state start item detail latest end bearer servic circuit switch transpar kbit teleservic telephoni khz kbit facsimil kbi teletex kbit mix mode teletex facsimil kbit suppplmentari servic order enhanc servic common set supplementari servic member state implement supplementari servic intend ad telephon network inher definit isdn protocol procedur subaddress termin portabl user user signal call control messag implement foreseen stage telecommun administr invit establish framework cept supplementari servic call wait call line identif close user group servic implement countri direct diall adaptor connect exist termin isdn interfac adaptor adaptor channel access packet switch servic adaptor nation note special attent definit person comput bearer servic kbit note special attent compat circuit switch packet switch servic compat realiz termin network servic end implement period precis date introduct servic decid bearer servic packet bearer servic channel telecommun administr invit studi framework cept us teleservic videotex teletex messag handl teleact packet bearer servic teleservic kbit order augment demand list teleservic consid prioriti telephoni khz kbit audioconfer kbit videotex alphageometr kbit imag transmiss comput commun kbit teleservic telecommun administr ask identifi framework cept servic produc detail specif servic adaptor bi asynchron termin supplementari servic telecommun administr invit studi framework cept end list supplementari servic base cept list advic charg complet call meet busi confer call divers freephon malici call identif parti call call user identif note provis supplementari servic assum avail isdn user part isup isup provis telephon user part tup restrict servic end teleservic base packet servic telecommun administr agre packet servic refer paragraph teletex videotex messag handl ccitt recommend teleact set servic provid user reliabl transfer small volumen pack size inform servic adapt teleservic tele alarm telesupervis tele alert telecommand telemetri teleshop teleservic base kbit audiographi kbit alphaphotograph videotex kbit viewphon kbit supplementari servic work continu number address signal achiev full cept specif isup signal connect control part sccp transact capabl tcap recommend telecommun administr order reach common standard europ earliest opportun interim solut recommend telecomun administr start ccitt introduc intern digit exchang link digit circuit possibl analogu circuit interconnect mean enhanc telephon user part tup pstn isdn servic telecommun administr provid framework cept detail technic specif tup end requir interwork exist public telephon network achiev includ mean identifi teleservic termin note tup base red book tup ccitt enhanc meet isdn requir includ supplementari servic hereabov tariff consider issu tariff level structur isdn fundament rapid longer term inevit period high invest cost level invest basic access compar current telephon network invest structur relat type transmiss studi isdn tariff complet telecommun administr invit studi framework cept propos accord current trend tariff servic includ telephoni depend distanc present bear mind problem transit cost countri transit phase analogu network isdn period telecommun administr request studi cept relationship hand tariff threshold applic isdn servic isdn basic access tariff applic telephoni tariff teleservic bearer capabl independ teleservic contrari ad network charg independ util bearer capabl agreement obtain ratio monthli rental primari rate access kbit basic access kbit ratio order discuss interwork nation isdn trial administr implement nation trial isdn full implement present recommend endeavour provid interconnect servic order increas earli experi isdn europ level penetr forecast demand field servic support isdn provid relev basi market plan realist set object attain year end level penetr isdn permit market servic termin reach matur phase object adequ geograph coverag rate penetr nation level countri administr plan provid isdn access number equival subscrib main line figur depend thing capabl industri offer cost effect isdn solut infrastructur termin equip territori coverag shou