Just a heads up to anyone with an AudioCodes who plans to move to BigPipe VDSL + WxC VFX. Last night BigPipe made some changes on their network resulting in no internet connectivity if you use an AudioCodes MP-264 on their network with a Public IP address.
Works fine if you are using their CG-NAT, but this of course can mess with SIP traffic.
Answer on this issue from BigPipe is: "The issue is most likely with the way the modem in question handles and interprets PPP session remote endpoint and it seems to be isolated to your device"

If anyone else has this setup, let me know if you can get it working with a Public IP address.

Cheers