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 1 for an example script, and Chapter 1 for full detail of the script used.
Under normal use this function is called from the PPP subsystem if the cyg_ppp_options_t 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.