podla manualu v tom jednoduchom rozhrani zvol Network, Wireless LAN, General a uvidis okno s volbou Channel Selection = volba kanalu. Blizsie v popis v manuali http://www.zyxel.com/DownloadLibary_ShortName/P-66 0HW-T3_v2/user_guide/P-660HW-T3%20v2_3.40.pdf