I intend to solely use the HH5.
Power off HH4
Power off HG612
Connect HH5 to phone line
Power on HH5
Power off HG612 and leave for a few seconds.
Disconnect the cable from socket to HG612
Set up as much of the HH
Power up HH5 and allow it to fully boot - that way it is not trying to establish the connection whilst teh boot process is in porgress and you will have a stable HH5. Check settings are correct.
Connect HH5 to socket.
Allow it to sync and that is it.
M H C
taurus excreta cerebrum vincit