I just got Dlink DPH C160s VOIP SIP phones to connect to 3cx. The phones connect ot 3cx, but the registration takes over 5 minutes. Second issue is that the phones are suppose to reregister after 3600 seconds, but they don't. I can't dial the other extension if the phones unregistered and then registered again on its own. Does it take that long to register a hardware phone? 3cx soft phone registers initially in a matter of seconds only. All the help would be greatly appreciated.