topic Re: Yealink VOIP issues since swapping to Superfast broadband in Broadband

Yealink VOIP issues since swapping to Superfast broadband

andyt198 — Mon, 18 May 2026 10:22:27 GMT

I have been trying to resolve this issue since January, when I upgraded to superfast broadband. I wfh and my VOIP phone worked fine until then. Sky support is useless. They latest advice was to go to 192.168.0.1 and enable UPNP but still cannot make or recieve calls. The phone is connected to the wifi a I can see it on connected devices. Any help greatfully received!!

Re: Yealink VOIP issues since swapping to Superfast broadband

TimmyBGood — Mon, 18 May 2026 10:36:14 GMT

@andyt198

Are you using a white Max Hub?

Re: Yealink VOIP issues since swapping to Superfast broadband

Me134 — Mon, 18 May 2026 10:39:43 GMT

@andyt198 wrote:
I have been trying to resolve this issue since January, when I upgraded to superfast broadband. I wfh and my VOIP phone worked fine until then. Sky support is useless. They latest advice was to go to 192.168.0.1 and enable UPNP but still cannot make or recieve calls. The phone is connected to the wifi a I can see it on connected devices. Any help greatfully received!!

According to AI online there's a few options, rather than post them all on here just post "Yealink VOIP phone issues using Sky Max router" in Googles AI (or any other AI), this is presuming you have a Max router. Just work your way down the options with the usual caveat that sometimes it gets it all wrong.

Re: Yealink VOIP issues since swapping to Superfast broadband

andyt198 — Mon, 18 May 2026 12:14:20 GMT

yes I am

Re: Yealink VOIP issues since swapping to Superfast broadband

andyt198 — Mon, 18 May 2026 12:41:24 GMT

Nothing has worked so far, still the same issue

Re: Yealink VOIP issues since swapping to Superfast broadband

TimmyBGood — Mon, 18 May 2026 13:39:18 GMT

@andyt198

By default a broadband circuit with a white Max Hub will be provisioned with a shared external IP address using MAP-T: this has the potential to mess various things up (including VoIP and business VPN)

The instructions you had regarding UPnP would actually have been an attempt to switch off MAP-T and put an individual IP address in place, but this may not have been successful.

Re: Yealink VOIP issues since swapping to Superfast broadband

andyt198 — Mon, 18 May 2026 13:50:48 GMT

Thank you @TimmyBGood so are you saying that there is no fix?

Re: Yealink VOIP issues since swapping to Superfast broadband

TimmyBGood — Mon, 18 May 2026 13:57:10 GMT

@andyt198

I'd suggest you need to get Sky to confirm that you're definitely on a 1:1 IP address.

Re: Yealink VOIP issues since swapping to Superfast broadband

andyt198 — Mon, 18 May 2026 14:59:30 GMT

So just got off the phone with Sky who told me there's nothing they can do, cannot revert back to standard dual stack IPv4, I'll look for a provider who can support VOIP as I need it as part of my job