Allows you to run a program before a connection is established. It is called immediately before dialing has begun. This might be useful, e. g. to stop HylaFAX blocking the modem.
Permet executar un programa abans d' establir una connexió. Es crida immediatament abans que comenci el marcatge. Pot ser útil, p. ex. per evitar que HylaFAX bloquegi el mòdem.