User guide

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Chapter 5 - Commands
The #CLA0 disables access from the command port
to the composite link. The default condition is no
access to the composite link thru the command port.
#DTR Toggle DTR
The Toggle DTR command (#DTR) drops DTR for
500 msec on the composite link. The Toggle DTR
command is used for DTR dialing with an external
dial-up modem.