The Norstar Key Indicator Module (KIM) is an add on the the Nortel T7316 phone which allows it the capability of handling 24 more lines. The module fits seamlessly on the T7316e and can be wall mounted with the phone if desired. Up to nine T24's can be added to a T7316e, allowing for a maximum of 216 additional keys. Please note that some cabinets have a limit on the number of t24s which may be used on the system, please check the documentation shipped with your KSU for details. The twenty four buttons on the KIM can be pre-programmed for commonly used features, internal speed dials and external speed dials, can be used to access lines, or can indicate the status of other phones on the system. The T24 is ideal for employees who need to know the status of lines and phones on your system - such as Receptionists and Managers. This is a charcol unit, and includes T24 Unit, wall mount base, documentation, and connection cords.