I use a brandnew 3CX installation with 2 Grandstream GXP2124 phones. When I setup the provisioning on the phone en reboots the phone, it take 58 minutes and 33 reboots before the phone is provisioned. Then it works fine. Its a normal provisioning like http://www.3cx.com/sip-phones/grandstream-provisioning/. The provisioning of the settings, display logo and phonebook is after an hour ready and OK. In the time between the phones display only booting with a progress bar and reboots 33 times. I use the latest firmware version, auto updated by firmware.grandstream.com, Version 18.104.22.168. What can I do?