Kanaly soedineniya s regional'noi set'yu podklyuchayutsya k PC-routeru posredstvom sinhronnyh ili asinhronnyh modemov ili inym sposobom. Pri etom dannyi PC-router osnashaetsya sootvetstvuyushei interfeisnoi apparaturoi (sm. razdel 3.1.2), podderzhivayushei neobhodimyi apparatnyi interfeis.