Sip protocol blocked on Mobile Data?

[Tunes0710]

Hi all.

Is the SIP protocol blocked by default on Mobile Data?

I can connect to my home VOIP server from my phone whilst on the local LAN and also on the separate internet connection in the house (so I know it works ok), but as soon as I switch to mobile data, the extension will not register.

Is this a permanent block, or something we can contact o2 Customer Services about and ask them to remove the restriction?

Many thanks 🙂

[Tunes0710]

Hi @Martin-O2, many thanks to you (and everyone else) who took the time to reply.

That's a nuisance, as it doesn't even allow me to connect  "locally" if I have connected via VPN to my home network either, so it's definitely stopping the SIP protocol.

Thanks for assisting.

[Martin-O2]

No problem @Tunes0710. Happy to help any time.