Page 319 of 906Circuit Card Description and Installation366NT5D97 Dual-port DTI2/PRI2 cardContentsThe following are the topics in this section:Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359IntroductionThis section contains information required to install the NT5D97 Dual-portDTI2/PRI2 (DDP2) card.The NT5D97 is a dual-port 2.0 Mb DTI2/PRI2 card (the DDP2 firmwarefunctions in DTI2 or PRI2 mode, depending on DIP switch settings) thatintegrates the functionality of two NT8D72BA PRI2 cards, and one QPC414ENET card into a single CE card. The NT5D97 occupies a single slot in theNetwork shelf and provides two DTI2/PRI2 network connections: aninterface to an external D-Channel Handler (the NT6D11AF) or the NT6D80Multi-purpose Serial Data Link card, and an optional plug-on NTBK51AADownloadable D-Channel daughterboard (DDCH) with two DCH interfaceports.The NT5D97 DDP2 card can be mixed in the same machine with PRI2NT8D72BA cards.