With over 30 years of experience, we are confident that ABA will meet and exceed your expectations in a professional answering service. We are a full-service message center offering telephone answering and voice mail services. We proudly serve all of Maryland. The entire United States is served via our toll-free phone program. We offer our services to commercial, general business, medical, industrial and residential. Every account is individually prepared to meet the needs of the client and their callers. Every account receives attention from every caller.