NEC IPK II DTI-U40 T1/PRI Circuit Card (Refurbished)Key Features: Mfr. Part #: 750196 Provides for both T1 and PRI interfaces T1 trunk interface provides for the termination of T1 fractional T1 lines with ANI Tie line (E&M), DID, signaling, loop start, and ground start options Primary Rate Interface provides for the termination of an ISDN PRI line for voice service only and supports 4ESS (AT&T Custom), AT&T 5ESS (Lucent Custom), DMS 100 (Custom and National ISDN), and NI 2 protocols