Techniques are described herein for blocking robo-calls, spam calls, and telemarketing calls, which are becoming an industry menace. Such calls are blocked by tightly integrating a Software-Defined Networking in a Wide Area Network (SDWAN) controller with a Do Not Call registry. Analytics are used to analyze traffic call patterns, security insights are leveraged such as known malicious Internet Protocol (IP) and domain addresses, and a Call Barring feature may also be applied. This information may be pushed to edge devices to ensure robo-calls do not terminate on SDWAN-led voice endpoints.
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Sundararajan, Balaji; Oswal, Anand; Agarwal, Vivek; Wang, Rong; and Desai, Palak, "ROBO-CALLING PREVENTION WITH SOFTWARE-DEFINED NETWORKING IN A WIDE AREA NETWORK POLICY FOR UNIFIED COMMUNICATION", Technical Disclosure Commons, (October 29, 2019)