I may be missing the point here, but to accomplish your task, couldn't you just play a bell to a speaker - it would give you full control over what the students were hearing, and would seemingly be a lot simpler. You could then even extend the script to include things like morning announcements, etc.

  -Adam

P.S. Whereabouts specifically are you in SE Asia? Kudos to you on a wonderful (!!!) project.

--
By a scallop's forelocks!

In reply to Re: Using Perl to make a hot-lead from any port by Adrade
in thread Using Perl to make a hot-lead from any port by Petras

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