Callers have told me that sometimes when they phone me my phone ringst twice and then goes to an engaged tone, my phone does not ring, so I am unaware of the call. I have missed some important calls. I spoke to India today and the line was tested and all was ok. This is an intermittent fault and does not always happen. This is very inconvenient and I like everyone else I need a reliable phone connection. I have done a few checks and it would appear that this fault never occurs when a caller uses a mobile phone. Hoping V can sort.