Netgear Nighthawk RAX50 with Sky SR203 to get digital voice on Gigafast 900mb?

[-LtPidgeon-]

I've just moved to Sky from a shambolice experience with BT chopping my copper telephone line.

Anyway, I've also just discovered that my RAX50 does not have the Option 61 field, so I can't use that directly with my Sky connection anyway. It looks like I need to use the "Double NAT" method from @TrebleTA with the SR203 as the primary and my RAX handling DHCP for all my devices. Will this still allow me to use my handsets plugged into the SR203? Is there anything different I need to configure on the RAX50? I do have some consoles and I noticed it was mentioned about being able to use uPNP with double nat?

I've already wasted a few hours trying to get my Netgear connected directly to the ONT box, so I'd like to be in possession of as much info as possible before having another go at it tonight.

Thanks in advance.

[-LtPidgeon- · Accepted solution]

I managed to get this sorted earlier. Trial and error based on previous posts.

[TrebleTA]

Hi, if you follow my guide, it should all work, any probs shout and I can try to help.

[-LtPidgeon-]

Yes, it was your guide that I used, but my Netgear router was slightly different from the internet connection side. I used a different address range too, but everything is working tip top. Cheers!

[TrebleTA]

Yes the config is slightly different per device. It's a shame we need to use the sky device for the landline...