AT commands
Digi TransPort User Guide 120
Z command: Reset
The ATZ command is used to load one of the stored profiles for the active ASY port. The
command is issued in the format ATZn where n is the number (0 or 1) of the ASY port profile you
wish to load.
&C command: DCD control
The AT&C command is used to configure the way in which the router controls the DCD signal to
the terminal. There are three options:
• &C0 DCD is always On
• &C1 DCD is On only when an ISDN connection has been established (Layer 2 is UP)
• &C2 DCD is always Off
• &C3 DCD is normally On but pulses low for a time in 10 msec routers determined by S register
10.
&F command: Load factory settings
The AT&F command is used to load a pre-defined default set of S-register and AT command
settings (the default profile). These are:
E1, V1, &C1, &K1, &D2, S0=0, S2=43
All other values are set to 0.
&R command: CTS control
The AT&R command is used to configure the way in which the router controls the CTS signal to
the terminal. There are three options:
• &R0 CTS is always On.
• &R1 CTS follows RTS. The delay between RTS changing and CTS changing is set in AT register
56 in multiples of 10msec.
• &R2 CTS is always Off.
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