> What could the reason be for the following? I have a serial modem in > tty0, now, some times when I do pon it works, some times it does not. I > didn't think that a chain of instructions could be moody. > Please help. >
Chain of instructions ? Perhaps the link is not down completely, or some lock file is still around or the modem has not resets? What are the intervals between each pon command ? What are the circumstances on which this chain work ?

