Solve this Electronics Mystery!!! Hey guys - I really need some help from you experts. My elderly mother and father-in-law have two electrical devices that are, for unexplained reasons, totally incompatible with each other. I need some ideas to identify solutions for this bizarre problem. The first device is a Philips Lifeline. This is basically a medical emergency system. You push a button on a device around your neck, which activates a speaker phone that calls for emergency services. Other than in an emergency, it should not be placing any calls. The second device is a Landel Mailbug. This is basically a low tech email system. Periodically, this system will call an 800 number and download or send any emails. Each device is plugged into a 2-way telephone splitter that connects into the same phone jack. Now, the Lifeline was installed two weeks ago. Ever since then, the Mailbug has been very undependable. It may be several days before it will download or send messages. When we contacted Landel, the mailbug company, they confirmed that they are aware of an incompatibility issue with Lifeline. However, even their techs are clueless as to why it's happening. Lifeline is not aware of any problems. SO --- can any of you electrical experts explain to me how this could be happening? I'm not an electrical engineer, but I was hoping that one of you could give me some ideas as to how to fix this problem. HELP!!!