Panasonic Business Telephones 16 Port Echo Cancellation Card REBOXED RB-KX-TD...
16 Port Echo Cancellation Card REBOXED. 16-Port Echo Cancellation Card (ECHO16). - Provides echo cancellation for conference calls for up to 16 ports. Country of Origin Part Number: RB-KX-TDA0166. - Mounts on the KX-TDA0190 (OPB3) card.