Hopefully I explain this correctly. I have a CTX 100 with DTK3010 phones. I have one user who is complaining that her phone will randomly pick up to speaker phone. No one is calling. It just automatically picks ups. If it happens on the weekend it will stay on until she gets in and hangs it up. The phone works fine when someone is calling her or she is calling out. No one else is complaining of this problem. I have switched phones and that did not help. It happens at random times and random intervals. Any help is greatly appreciated.