This function implements a subset of the automated conversational
scripting as defined by the chat program. The first
argument is the name of the serial device to be used, typically
"/dev/ser0" or "/dev/ser1". The
script argument is a pointer to a zero
terminated array of strings that comprise the chat script. See Chapter 143 for an example script, and Chapter 146 for full detail of the script used.
The return value of this function will be zero if the chat script fails for any reason, such as an ABORT or a timeout. If the end of the script is reached, then the return value will be non-zero.
Under normal use this function is called from the PPP subsystem if the
script field is set to a
non-NULL value. This function should only be used
directly if the application needs to undertake special processing
between running the chat script, and bringing up the PPP connections.