Thanks @j0hn and everyone else. I neglected to read SINs in advance.
My invisible tag line, I get the sarcasm now! Made me laugh after having first gone over my head.
The ONT with battery backup is option 1 below, from my research, is no longer supplied by OR.
All 'new' interfaces will be passive, presented as a fiber option 2 below.
Then OR supply optical modem or modem/router? ISP supplied equipment?
1.10/100/1000Mbit/sRJ-45 connection with IEEE 802.3 [1]Ethernet at10, 100or1000Mb/s,in fullduplex mode.
2.1000 Mbit/s1000Base-SXor1000Base-LXoptical presentation with IEEE 802.3[1]GigabitEthernet framing.
I think option one is too expensive and not a customer install option. OR will charge you £££ to change the battery.
Where as 2 can be installed and maintained by a chimp(me).
And this leads me to my second point about prices/Openreach/BTw/ISPs
BT retail ISP seam to have a 'monopoly' on FTTP as it stands at the moment.
This is the change I am hoping for and I hope it extends beyond FTTP.
Does this make my ramblings any clearer?