Dataphone Digital Service (DDS) The first private-line digital service offered by {AT&T}, with data rates typically at 2.4, 4.8, 9.6 and 56 kilobits per second. DDS is now part of AT&T's family of services. Most LEC (local exchange carriers) and IXC (IntereXchange Carriers) offer similar services. (1995-02-28)
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