July 2002
Intermediate to advanced
344 pages
8h 37m
English
Content preview from Newnes Radio and RF Engineering Pocket Book, 3rd Edition
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The data link can be either synchronous or asynchronous and the
data is conveyed through the network using an ISDN-based data proto-
col, the ITU-T standard V.110 rate adaptation scheme. Asynchronous
transmission requires start and stop bits to be added, so the net data rate
is reduced to 7680 bits per second (bps). Synchronous transmission
potentially allows a faster data rate, but error checking is employed
that requests re-transmission of data when errors are identified and
this can produce a lower overall data throughput.
18.5.3 High-speed circuit switched data (HSCSD)
HSCSD allows higher data rates by combining up to four 14.4 kbps
data channels ...
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