3COM - 3COM 3C882 IMPACT IQ Details about 3ComImpact IQ External ISDN Modem (U Interface) 3C882 Please ensure that your original part number matches this exactly, or check with the manufactuer for compatiblity. Customers are responsible for compatiblity. This part is guaranteed to be fully functional, original and authentic. Details about 3ComImpact IQ External ISDN Modem (U Interface) 3C882