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.
The customer support phone number of Suntrust Ach Department is 800.752.2515 / 800.382.3232 (Click phone number to call).
When you have banking questions, we have answers. Below is a list of answers to the most frequently asked by our clients. We've organized them by the topics on our site to make finding your answer even easier. If you don't see what you're looking for here, feel free to give us a call at 800.SUNTRUST.