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Cisco Systems, Inc. is an American multinational digital communications technology conglomerate headquartered in San Jose, California. Cisco designs, manufactures, and sells networking hardware, software, telecommunications equipment, and other high-technology services and products. It specializes in specific tech markets, such as the Internet of Things (IoT), domain security, videoconferencing, and energy management.
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Before calling or emailing, make sure you register for a Cisco.com User ID and have your exact product serial number or service contract number completely ready. Live human engineers cannot open an official Technical Assistance Center (TAC) case or troubleshoot hardware issues without validating your entitlement first. If you have an active contract, using the online Cisco Support Case Manager completely bypasses the phone hold queue.
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