I'm not sure which of the cartridges suported external bells & horns. There were 2 Feature Packs cartridges, a MOH/Page cartridge and a Power Fail cartridge.

I know AT&T sold a unit that permitted the connection of standard T/R devices to the ports of the 206/410/820 systems.

Last edited by dexman; 06/06/13 09:35 PM.

I Love FEATURE 00