A pendant alarm may look exactly the same after a home telephone line changes, but appearance alone cannot confirm that an emergency call will reach the monitoring service. This guide helps families ask the right questions, arrange a safe test and keep a written record. Important: Do not create a power cut, unplug essential equipment or disconnect a router to test an alarm by yourself. Arrange any loss-of-power or backup test with the alarm provider. If a person is in immediate danger, use the usual emergency services rather than relying on a test call. Why pendant alarms and digital phone lines need checking Traditional home telephone services could carry power through the telephone line. Modern digital phone services normally depend on electrical equipment inside the home, such as a router or telephone adapter. This means a home phone connection may be affected by a household power cut unless a suitable backup arrangement is present. Many older telecare unit...