Does isdn4linux support Microsoft Callback (CBCP)?
Yes, this is implemented in ipppd. To enable it you have to set the parameter “callback 6” as an ipppd option on the client side for an admin managed callback. This means the server will call back on the number it has been configured for. More interesting is a user managed callback, since the number to be called back can be provided by the user. Set the paramter “callback 123456” if you want to be dialed back on number 123456.
