Hello,

What you need to do is install a shared line on an analog port (vg224,vg248, ata186 or fxs port), and you can hook up an analog loud bell to that, which will ring at the same time the IP phone extension is dialed.

Here is one link:

http://www.cooperwheelock.com/reference/productcatalog.aspx

Hope that helped, if so please rate.

Hi Peter,

Just to add a little note to the great tips from Kenneth (+5 points for this Kenneth :)

These Strobes will need to be connected to an Analog ATA (shared line with IP Phone)or FXS Port like nicely noted by Kenneth. I have had good luck with the Viking product line :)

http://www.smarthomeusa.com/Shop/Phone/Viking-Phone-Accessories/Item/BLK-3-EWP/specifications/

http://www.algosolutions.com/pdf/AN-0703.pdf

Hope this helps!

Rob