Page 709 of 906Circuit Card Description and Installation720NTAK09 1.5 Mb DTI/PRI cardContentsThis section contains information on the following topics:Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 709Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 710Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 714Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715IntroductionThe NTAK09 1.5 Mb DTI/PRI digital trunk card is a standard-size IPE circuitcard.The NTAK09 provides 1.5Mb ISDN primary rate interface and digital trunkinterface capability. The NTAK09 can be equipped with two daughterboards:the NTAK20 clock controller and the NTAK93/NTBK51 D-channel handlerinterface.You can install this card in slots 1 through 4 in the MG 1000S. The card is notsupported in the MG 1000S Expansion. Up to four digital trunk cards aresupported in each MG 1000S.In North America, the NTAK09 can be replaced by the NTRB21 – TMDI(DTI/PRI/DCH) card, which is described in “NTRB21 DTI/PRI/DCH TMDIcard” on page 825.Contact your system supplier or your Nortel representative to verify that thiscard is supported in your area.