What does TCP/IP mean? TCP/IP stands for Transmission Control Protocol/Internet Protocol, which is a set of networking protocols that allows two or more computers to communicate. The Defense Data Network, part of the Department of Defense, developed TCP/IP, and it has been widely adopted as a networking standard. For more information, you may consult several TCP/IP-related FAQs at the FAQ.org website.
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Call 800.786.8787. Call Us >>. If you have questions or need to report a lost or stolen card, call a SunTrust representative at 800.SUNTRUST (800.786.8787). You can even contact us from outside the U.S. or Canada by using our international calling instructions.