From the sewer that is my inbox:
Teradon Industries, which adds scare quotes around "smart solutions" in its own motto, would very much like you to consider buying an institution-class intercommunications system.
Its system allows school staff to set bells from the computer station, play a school song, control the building's announcement system, and summon pteranodons.
Set your bells with tones from a computer.
Have your School Song for the bell to begin the school day.
Change your schedule from your computer.
Time is corrected automatically from the Internet. You never have to change time on the bell system again.
Intercom system programming can be monitored remotely.
Make room calls and announcements from your telephone or master handset.
Schools can now manage and control their intercom system. No more costly service bills and waiting for service.
Product Page [Teradon]