1 9 0 9 , ▁the ▁first ▁manual ▁tele phone ▁exchange ▁with ▁a ▁ 5 0 ▁line ▁capacity ▁entered ▁service ▁in ▁the ▁Bü y ük ▁Post ane ▁( Gr and ▁Post ▁Office ) ▁in ▁Sir ke ci . ▁ ▁Bulg aria , ▁ 1 8 7 0 s ▁▁ ▁The ▁rise ▁of ▁national ▁aw ak ening ▁of ▁Bulg aria ▁led ▁to ▁the ▁Bulgar ian ▁rev ival ▁movement . ▁Un like ▁Greece ▁and ▁Ser bia , ▁the ▁national ist ▁movement ▁in ▁Bulg aria ▁did ▁not ▁concent rate ▁initially ▁on ▁armed ▁resistance ▁against ▁the ▁Ott oman ▁Empire . ▁After ▁the ▁establishment ▁of ▁the ▁Bulgar ian ▁Ex arch ate ▁on ▁ 2 8 ▁February ▁ 1 8 7 0 ▁a ▁large - scale ▁armed ▁struggle ▁started ▁to ▁develop ▁as ▁late ▁as ▁the ▁beginning ▁of ▁the ▁ 1 8 7 0 s ▁with ▁the ▁establishment ▁of ▁the ▁In ternal ▁Revolution ary ▁Organisation ▁and ▁the ▁Bulgar ian ▁Revolution ary ▁Central ▁Committee , ▁as ▁well ▁as ▁the ▁active ▁invol vement ▁of ▁Vas il ▁Lev ski ▁in ▁both ▁organis ations . ▁The ▁struggle ▁reached ▁its ▁peak ▁with ▁the ▁April ▁U pr ising ▁of ▁ 1 8 7 6 ▁in ▁several ▁Bulgar ian ▁districts ▁in ▁Mo esia , ▁Th race ▁and ▁Mac ed onia . ▁The ▁supp ression ▁of ▁the ▁u pr ising ▁and ▁the ▁at roc ities ▁committed ▁by ▁Ott oman ▁soldiers ▁against ▁the ▁civil ian ▁population ▁increased ▁the ▁Bulgar ian ▁desire ▁for ▁independence . ▁ ▁Alban ians , ▁ 1 8 7 0 s ▁▁ ▁Because ▁of ▁religious ▁t