Appendix M: Break Sequence Operation - US Robotics USR3520 User Manual

Modemulator User Guide

Appendix M: Break Sequence Operation

If the Modemulator is in a cellular connection, it detects a break signal (spacing data bits longer than one
character length) sent by the DTE into its Terminal port, and sends a token representing the break to the
remote Modemulator. The remote Modemulator receives the token and generates a break signal on the
DTE's RXD line. The length of the generated break signal is controlled by S21 (in 10 ms increments) on
the receiving Modemulator. Set S21=0 on the receiving Modemulator to disable generation of break
signals.
Since most of the data buffering takes place in the gateway's memory, the only version of break handling
supported is unexpedited, non-destructive (&Y3 in USRobotics Courier analog modems).
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