Introduction 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.
V.22-1988由ITU-T - International Telecommunication Union/ITU Telcommunication Sector 发布于 1988-11-01,并于 2010-06-10 实施。
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