We have a site that just installed a Copper Industries SP40s paging system. (See link below)
http://www.cooperindustries.com/content/dam/public/safety/notification/Resources/Instruction%20Sheets/P84714.pdf
The information provided by the vendor is:
we need an "sa phaseport 600 ohm 1 volt peak to peak and if that is not available then we need a module to convert signal to line level"
I have a 2921 with FXO card as well as a VG204. I am trying to determine if either of these will work, or if I need an intermediary device.
Any suggestion on how to configure this would be greatly appreciated.