You have the ability to page through 3 sets of 28 keys, so you can actually programme up to 84 keys per module. Add to that the fact you can daisy chain up to 3 of these modules per telephone and this provides up to 84 physical keys and 252 keys in all.
◾ 4.3" colour LCD
◾ 28 physical Keys (3 page sets per module so 84 Keys per Module)
◾ Support advanced features including , busy lamp field (BLF), Speed Dial & shared call appearance (SCA)
◾ Up to 3 modules (max of 252 Keys per phone)