The-8 port Analog Extension Caller ID card delivers Caller ID information for incoming CO calls to single line telephone (SLT) devices such as Fax machines, and Caller ID units. Internal calls to the single line device will also receive the internal extension number that is calling.

The Caller ID information can be viewed on any standard analog extension device that supports FSK Type signaling. The KX-TDA0168 EXT-CID Card can only be mounted on a KX-TDA0173 SLC8 card, this feature is not available with the SLC16 16-port SLT Extension Cards . When a KX-TDA0168 EXT-CID Card is installed all 8-ports on the SLC8 card will provide Caller ID information.