Norstar 616 Caller ID Cartridge Features:
The Norstar NT8B88FA Caller ID interface unit, when used with DR5.1 software on your 6x16 Norstar system, puts caller ID info. on the display of your Norstar phones. You must have Caller ID service from your phone company for this to work properly.
Norstar 6x16 Caller ID is compatible with the following softwares:
6x16 DR5 Software
6x16 DR5.1 Software