The CIA-1000 Call Indicator Assembly connects to a RTS TW intercom channels and provides an attention-getting indicator light for cueing and paging. The light can be activated by any call button on the channel. Relay contacts are also included for activation of an external device along with the light. The CIA-1000 top-light version can be placed on a desktop or mounted on a wall. The front light version can be rack mounted with optional rackmounts.