One reason you might want to send the modem commands directly is if you have a set of modem configurations you want to keep, and not have to specify for every connection. A good way to do that is via modem profiles. Modems can have several stored profiles numbered 0,1,... AT&V can be used to view them all. The default profile is usually 0 (this can be changed via AT&Y.) The profile currently in use is called the “active” profile.
When you change a setting, the active profile is modified. The
ATZ command will have the modem load the default profile,
erasing any changes you have made. To save changes, Load the profile you want to
change via ATZ
n is the profile number). Make the changes you want,
then save it with AT&W
have kppp use the profile you want, change the modem initialization string
( Initialization String
on the Modem tab). For example
ATZ1 will have the kppp reset the modem and use stored
If you want reset you modem to get back to some known starting point, use AT&F&W to set the active profile to the factory defaults, and store those settings as the default profile.
Examples of profile changes are in the next section