1)zadat do ustredny mac ke klapce 2)Software Update firmware http://downloads.snom.com/fw/snom300-8.7.5.35-SIP-f.bin 3)advanced update update auto url https://kp.3cx.eu:5001/provisioning/zn4l3tul3l/cfg{mac} refresh 3600 xxx http://downloads.3cx.com:80/downloads/v150/templates/firmwareupdates/snom/snom300-8.7.5.48-SIP-f.bin