Having moved from BT to Sky, I've now got a Sky Q router. After a lot of faffing around and reconfiguring the router, I have everything in the house working the way I want it except my my VOIP phone. I have a Polycom 331 VOIP phone. It is supplied by the company I work for as I mainly work from home. Since moving to Sky it refuses to connect. SIP ALG could be to blame. The option isn't available in the router config. Might have to replace the router which is an ER115. I have Sky broadband and Sky Q and I have 2 Sky Q boxes. If I wanted to replace the router, I see that there is a list of compatible routers. That's fine.
Configuring there is a total contradiction with regards to whether you need the ADSL username and password from the router. Some say you do, others say you don't. Those that say you do suggest using Wireshark to get the details without ever saying how you use Wireshark to get it. Plenty of examples for other Sky routers, not the Q router. Searching Sky was a waste of time as you get no hits for SIP or VOIP.
So, any ideas? If anyone says I should use Wireshark to get the details, please provide some steps.