-- Pairs with Compatible AT&T Synapse Desksets: SB67030, SB67031 and SB67020
-- Up to 2 per Deskset, 10 per system
-- 24 Feature Key Assignments per Expansion Module
-- Busy Lamp Field (BLF) - Extension Monitoring and/or Quick Dial (up to 48 per Deskset)
-- Deskset or Wall Mounting