I'm trying to setup my new Grandstream DP750 base and DP720 phone to my fibre connection, but can't seem to get it to work.
The DP750 has a RJ45 to RJ45 cable, so it won't connect to the phone socket on the Hub modem, replacing the cable with a RJ45 to RJ11/12 and plugging it into the phone socket doesn't work.
Plugging the RJ45 into one of the LAN sockets, also doesn't work.
My old phone works fine when plugged into the Hub, so I don't think its a line issue.
Any help greatly appreciated.