Dataphone Digital Service


Also found in: Acronyms.

Dataphone Digital Service

(communications, product)
(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 Accunet family of services. Most LEC (local exchange carriers) and IXC (IntereXchange Carriers) offer similar services.
Mentioned in ?
References in periodicals archive ?
During 1974, AT&T initiated its Dataphone Digital Service (DDS), establishing the first nationwide, end-to-end, private-line digital data service.
Its Dataphone Digital Service provides private digital links at speeds to 56 kbps to more than 100 USA cities and interconnects with Canada's Dataroute digital system.
Table 1 is a comparison of the total monthly rate for four different private line services--the terrestrial digital circuit or TDC, the voice grade circuit or VGC, a 9.6 kb/s Dataphone Digital Service (DDS), and a 56 kb/s Dataphone Digital Service.