Compatible with C66 and C6230 DSS buttons with dual color (LED-Green and Red) for line status information
Up to 29 programmable functions
Daisy-chain 5 modules for 150 programmable keys
Supports Busy Lamp Field (BLF), Presence
Programmable for speed dialing, call pickup, Intercom, hold, transfer, voicemail etc.
Expansion module is powered by the host phone