With the snom 320, 360 and 370 Expansion Module, your snom has the best features to meet the requirements of executive and administrative staff who require high call coverage and flexibility from communication systems.

The new Version 2 of the Expansion Module, allows to daisy-chain up to 3 expansion modules. So you can use up to 138 Buttons (3x 42 + 1 x 12) with LED's.