In tip 090 we used the -d switch in RASPHONE.EXE to build our own autodial.

Here are some other undocumented switches (there is no guarantee that these will exist in future releases).
(See tip 225 for the name/location of the phonebook.)

Usage: rasphone c|r|d|h|s|a\] entry \[-f file\]

Switch   D e s c r i p t i o n Example
-e Edit a phonebook entry rasphone -e MSN -f  %SystemRoot%\System32\RAS\ name of phonebook
-c Clone a phonebook entry rasphone -c MSN -f  %SystemRoot%\System32\RAS\ name of phonebook
-r Remove a phoneboot entry rasphone -r MSN -f  %SystemRoot%\System32\RAS\ name of phonebook
-d Dial a phonebook entry rasphone -d MSN
-h Hangup rasphone -h MSN
-s Raise Dial-Up Networking Monitor       rasphone -s  Note:RAS must be connected.
-a Phonebook Entry Wizard rasphone -a XYZ -f  %SystemRoot%\System32\RAS\ name of phonebook