860 NTAK09 1.5 Mb DTI/PRI cardThe NTAK09 is a standard-size intelligent peripheral equipment circuit cardin the Option 11C main and IP expansion cabinets. It provides 1.5Mb ISDNprimary rate interface and digital trunk interface capability. The NTAK09 canbe equipped with two daughterboards: the NTAK20 clock controller and theNTAK93/NTBK51 D-Channel handler interface.The NTAK09 is being replaced by the NTRB21 - TMDI (DTI/PRI/DCH) whichis described in "NTRB21 DTI/PRI/DCH TMDI card" (page 1053).The NTAK09 1.5 Mb DTI/PRI digital trunk card is a standard-size IPE circuitcard.ATTENTIONIMPORTANT!Each Media Gateway that has a digital trunk must have a clock controller clockedto an external reference clock.Note: Clocking slips can occur between Media Gateways that areclocked from different COs, if the COs are not synchronized. The slipscan degrade voice quality.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.Digital trunk cards are supported only in the Media Gateway but not in theMedia Gateway Expansion. Up to four digital trunk cards are supported ineach Media Gateway. The NTAK09 card can be installed in Slot 1, 2, 3,and 4 of the Media Gateway.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" (page 1053).Contact your system supplier or your Nortel Networks representative toverify that this card is supported in your area.Physical descriptionThe DTI/PRI card uses a 9:5" by 12.5" multilayer printed circuit boardwith buried power and ground layers. The clock controller and D-channeldaughterboards are fastened by standoffs and connectors. See Figure 276"NTAK09 DTI/PRI circuit card" (page 861).Nortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
