1200 BITS PER SECOND DUPLEX MODEM STANDARDIZED FOR USE IN THE GENERAL SWITCHED TELEPHONE NETWORKAND ON POINT-TO-POINT 2-WIRELEASED TELEPHONE-TYPE CIRCUITS
|Publication Date:||1 November 1988|
This modem is intended for use on connections on General Switched Telephone Networks (GSTNs), and on point-to-point circuits when suitably conditioned.
The principal characteristics of this modem are as follows:
a) duplex operation on 2-wire GSTN and point-to-point leased circuits,
b) channel separation by frequency division,
c) differential phase shift modulation for each channel with synchronous line transmission at 600 bauds (nominal),
d) inclusion of a scrambler,
e) inclusion of test facilities.