Nortel Meridian M3900 Key Based Add on module - Refurbished - Black

The Nortel Meridian M3900 Key Based Add on module (KBA) is a dedicated adapter unit, dsigned to provide the top 3900 series model telephones with 22 additional direct dial keys and corresponding busy lamp field (BLF) indicators. The KBA is compatible with the and telephones. A maximum of 2 Nortel Meridian M3900 Key Based Add on modules (KBAs) can be connected to a telephone at one time, providing a maximum of 44 additional Keys for each phone.