The BM12 Button Module extends the number of call appearances and feature buttons on your telephone. It provides 24 additional lines using two pages of 12 call appearances/features each.
- Page left / right scrolls to the next page, providing up to 24 programmable buttons
- 12 dual red/green LED buttons
- BM12 is currently compatible with the 9508, 9608 and 9641, which support up to three serially attached button modules