I have 2886. Yes, I use the POTS line for some calls and no recent changes to any other equipment. I've wanted the 212 for some time but was concerned about Polycom/Obihai seemingly backing out from the UK market and the need to buy one from the US. In any case I understand the 312 is now out (or will be) but I'm still left wondering how much, if any, support will be available to get any replacement configured and working correctly in the UK. I've had no definitive answer as yet from Voipcheap as to whether anything has changed at their end and, to be honest, I really don't expect to get one. That makes it difficult to decide what to next - replace the 100 with 'something else' and/or find another VOIP service provider - so far I can't identify one that offers a similar service that isn't owned by the same company!