In reply to a post by MrSaffron:

Not clear if BT will ever release the SIP details so you can use the Digital Voice on your own hardware.

No requirement for them to do this, and in terms of support a lot simpler in a locked down environment.

I think BT Business supplies an Ethernet based VoIP Phone (which is locked down to their service) and when I spoke to BT about this I was told that its early days yet so there is plenty of time for them to release new products to work on their new Digital Voice.

I said I was happy to pay the one off fee for that exact handset if I was able to use that on our line, else I will be holding off to the last minute and then porting our phone number to our own VoIP Service.

BT said well we have till end of 2025 to decide what to do and that they would put in our notes to leave us on FVA as long as they can and that by then they have more products that could be used to provide that service.

So they could still lock down their system and also provide a locked down ethernet based handset.

Because how would it work if you have a copper line phone service with BT and FTTC / FTTP with another provider, that just wouldn't work if you are tied into BT Router for the phone service and a Router from your broadband provider.
But using a locked down Ethernet based handset would resolve that issue.

Paul

In reply to a post by jchamier:

I moved my old openreach number to VoIP with AAISP last year, when I moved my broadband to Virgin cable. It works and is quite low price. Although AAISP recommend not using NAT with VoIP which is harder on a dynamic single IP service that cable modem provides. (no FTTP here).

I use a Cisco SPA112.

NAT is becoming much less of an issue as IPv6 becomes ever more supported by ISPs. I'm using Sipgate and connected up via IPv6 so no NAT involved.

In reply to a post by MrSaffron:

So back to the Openreach modem or ONT days.

Yes if both of those had included a 431A socket, and the modem not discontinued, this would be a non issue.

BT Consumer is nothing special just another Sky, TalkTalk have an influence on what is required.Remember voice call volumes have been declining on landlines.

Agree completely, this is one for either standardisation, or controlling at the physical network level (Openreach) rather than the ISP level.

Having the 431A socket on the ISP issued device seems a bizarre decision. Unless the other ISPs are not interested in telephone call revenue.

In reply to a post by E300:

NAT is becoming much less of an issue as IPv6 becomes ever more supported by ISPs. I'm using Sipgate and connected up via IPv6 so no NAT involved.

Great, but still too many of the large ISPs are not yet doing IPv6; talk to Virgin Media or Plusnet for example.

Hopefully you are still firewalling your ATA !

Suggest you tell TalkTalk and Sky this. BT is only doing what they will be doing.

In reply to a post by MrSaffron:

Suggest you tell TalkTalk and Sky this. BT is only doing what they will be doing.

Like they will listen to me. I assume Sky wouldn't care as they've always only supported their router. No idea about TT. I'm just disappointed that we are moving from flexible industry standards, to less choice if you choose to replace your home router.

In reply to a post by jchamier:

Great, but still too many of the large ISPs are not yet doing IPv6; talk to Virgin Media or Plusnet for example.

Hopefully you are still firewalling your ATA !

That's one of the many reasons I'm not with either of those ISPs

Yes it is firewalled, besides the connection is initiated from inside so that is the job of a stateful firewall, all unsolicited incoming traffic to any address is automatically denied, unless a specific allow rule is added.

So, I've just signed up for BT's "Full Fibre" product, and just had the equipment delivered and been disappointed to discover that the "Essential Digital Home Phone" is just a DECT handset which connects to the BT Home Hub when you follow the "WPS" (it's apparently really not) process to connect the phone to the hub.

So, if I want to continue using BT's phone service, I'm stuck with using BT's handsets, and BT's hub

Oh, but BT had 2 included options for handsets:

2 x Essential Digital Phone
1 x Advanced Digital Phone

I wonder if the "Advanced" one could be a Yealink or similar phone with its own Ethernet-connected wireless gateway...?

So, I found a link onto BT's website where they have the manuals for the 2 phone types. It looks like they are the same in how they provide service, DECT to the Home Hub:

https://www.bt.com/help/landline/digital-voice--how-...