The M7324 (Expanded Set) is the best choice for a full-featured
terminal or central answering position, because it offers 24
programmable buttons with an LCD for one-button access to any
combination of lines, features and autodial numbers. Up to two
Central Answering Position (CAP) modules (48 buttons/module)
can be attached to a terminal to create powerful call coverage for
many lines or to accommodate additional Norstar features (refer
to section on CAP module for configurations).