Since 1987, DCA Services has continued to enhance our systems to meet the evolving needs of the telecommunications industry. As a complete service bureau, we’ll work with you to find a solution that’s right for your business operations, no matter how many (or few) services, bundles, rate plans or payment methods you offer. Wireline Long-distance carriers and resellers Competitive local exchange carriers (CLECs) Incumbent local exchange carriers (ILECs) Interexchange carriers (IXCs) Wireless Wireless voice & data carriers Mobile virtual network operators (MVNOs) Internet Protocol (IP) Internet Service Providers (ISPs) Broadband access networks Data communication services VoIP (voice over Internet protocol) Multi-Play Communications service providers who offer any combination of local, long distance, Internet, television and other services.