example in your rpt.conf file:
[27522]
startup_macro=*327523
Put after the = sign, the exact DTMF keys that you would use to do it over the air.
In this example node 27522 would connect to node 27523 at startup.
Rather than use the 3 (connect) command you may want to use the 991 (permanant-connect) command that you have defined elsewhere in your config file as shown below
To DTMF in a server shell command you have to define it in your functions.
Examples below:
[27522]
startup_macro=*99127523
[functions27522]
991 = ilink,13 ; Specific Link permanent connect - transceive
992 = cmd,/usr/local/bin/resettot.sh
993 = cmd,/usr/local/bin/whatever.sh
The numbers shown are examples only, use whatever you want.
Create the resettot.sh and whatever.sh shell scripts to do whatever you want them to do.