I am posting here to alert people to a problem I encountered with MIL as I have seen a number of people talk about the security that a phone care line can provide. We tested MIL's pendant today after doing a battery change. Seemed sensible thing to do. First call only got through to a BT message saying number I had dialled was not available. Second and Third call did go through. Needed to test it again in afternoon and fourth call again got BT pre recorded number not available. Talked to company's tech engineer who said that this problem was experienced quite frequently due to newer phone line technology not talking to older phone dialling equipment. He said it was an industry wide problem and that people were aware of it. Unfortunately the customers and purchasers aren't told this when they set the equipment up.