A1 Alert Answering Service is a telecommunications business. While we primarily focus on inbound telephone calls, we also offer a variety of other messaging services. A-1 Alert Answering Service is a telecommunications business. While we primarily focus on inbound telephone calls, we also offer a variety of other messaging services. We are proud members of the Association of Telemessaging Services International and have received Level One Technical Certification from Telescan, LLC. Our company adheres to a strict code of ethics that is honored by business colleagues. Our employees have demonstrated outstanding levels of professionalism and over the years, have earned the loyalty of many customers.