Before the telegraph wire extended from the Ural Mountains to the eastern frontier of Siberia, the dispatch service was performed by couriers, those who traveled the most rapidly taking eighteen days to get from Moscow to Irkutsk.
Ural mendietatik Siberiaren ekialdeko mugaraino telegrafo haririk ez zen garaian, mezuak mandatariek zeramatzaten, eta bizkorrenek hemezortzi egun behar zituzten Moskutik Irkutskera sartzeko.