Switched 56


Also found in: Acronyms.

Switched 56

A dial-up digital service provided by local and long distance telephone companies. There is a monthly fee and per-minute charge like the analog voice network. For connection, a DSU/CSU is used instead of a modem. Switched 56 uses a 64 Kbps channel, but one bit per byte is used for band signaling, leaving 56 Kbps for data.
References in periodicals archive ?
It can operate in a variety of network and telecommunications environments including ISDN, Switched 56 and V.
The three most prevalent types of digital services are: Basic Rate ISDN; Northern Telecom's Datapath, a two-wire Switched 56 capability; and AT&T's Accunet Switched 56 digital service.
In addition to the data and voice networks, Bassett also operated a separate videoconferencing network employing video codecs using multiple switched 56 kb/s circuits to create fractional T1 circuits.
Both run on analog phone lines rather than ISDN, switched 56 or T1 transmission lines.
We looked at point-to-point T1, Switched 56, ISDN and fractional T1," explains Denny Glavin, senior network analyst at MCD.
With the help of network providers Southern Bell and Sprint/Carolina Telephone, and equipment manufacturer Nortel--which has a number of facilities in nearby Research Triangle Park--the Johnston County School System developed a highly effective switched 56 kb/s data network that gives our users high-speed access to the Internet, efficient E-mail distribution, LAN interconnectivity and shared information databases, all on a public network platform that is friendly to expansion and upgrading.
There were four locations, mainly in US West territory, that either didn't have ISDN, or if they did, it was more costly than switched 56.
4 kb/s and higher as well as digital access, such as switched 56 and ISDN.