▁less ▁during ▁sport ing ▁events ) ▁to ▁their ▁local ▁affili ates , ▁which ▁allow ▁the ▁local ▁stations ▁to ▁generate ▁re venue . ▁In ▁the ▁same ▁manner , ▁in ▁addition ▁to ▁subscription ▁fe es , ▁cable ▁television ▁prov iders ▁generate ▁some ▁of ▁their ▁re venue ▁by ▁s elling ▁local ▁commercial ▁time ▁( us ually ▁alloc ating ▁around ▁four ▁minutes ▁per ▁hour ) ▁for ▁each ▁advert iser - supported ▁cable ▁network ▁it ▁car ries . ▁However , ▁while ▁much ▁of ▁this ▁time ▁is ▁sold ▁to ▁local ▁and ▁national ▁advert is ers , ▁port ions ▁of ▁the ▁allocated ▁commercial ▁time ▁are ▁reserved ▁by ▁network ▁affili ates ▁and ▁cable ▁prov iders ▁for ▁in - house ▁advert ising ▁( c able ▁prov iders ▁use ▁some ▁of ▁this ▁time ▁to ▁carry ▁commer ci als ▁for ▁their ▁services , ▁which ▁may ▁also ▁include ▁business ▁solutions , ▁resident ial ▁tele phone ▁and ▁broad band ▁internet ▁services ; ▁network ▁affili ates , ▁as ▁do ▁other ▁commercial ▁broadcast ▁stations , ▁use ▁this ▁reserved ▁time ▁to ▁carry ▁prom ot ions ▁for ▁their ▁programming ▁or ▁station ▁imag ing ). ▁ ▁C able ▁companies ▁are ▁required ▁by ▁the ▁ 1 9 9 2 ▁C able ▁Television ▁Cons umer ▁Prote ction ▁and ▁Compet ition ▁Act ▁to ▁negoti ate ▁for ▁re trans mission ▁consent , ▁usually ▁pay ing ▁broad c aster s ▁for ▁the ▁right ▁to ▁carry ▁their ▁signals . ▁This ▁provision , ▁over ▁time , ▁has ▁resulted ▁in ▁problems ▁between ▁pay ▁television ▁prov iders ▁and ▁companies ▁that ▁own ▁subscription ▁television ▁services ▁as ▁well ▁as ▁those ▁own ▁and