As we have already seen, you can turn on debug information logging with the -d option to pppd. The 'debug' option is equivalent to this.
As we are establishing a new connection with a new script, leave in the debug option for now. (Warning: if your disk space is tight, logging pppd exchanges can rapidly extend your syslog file and run you into trouble - but to do this you must fail to connect and keep on trying for quite a few minutes).
Once you are happy that all is working properly, then you can remove this option.
If you have called your ppp options file anything other than /etc/ppp/options or /etc/ppp/options.ttySx, specify the file name with the file option to pppd - e.g.
exec /usr/sbin/pppd debug file options.myserver /dev/ttyS0 38400 \