Page 128 of 162 Replacing equipment553-3041-500 Standard 1.00 September 2004Replacing the NTAK79 or NTBK50 2.0 Mbit PRI cardTo replace the NTAK79 or NTBK50 2.0 Mbit PRI card, follow the steps inProcedure 14.Procedure 14Replacing the NTAK79 or NTBK50 2.0 Mbit PRI card1 If the card is an NTAK79, or is an NTBK50 with the NTAK93 DCHIdaughterboard attached, disable the associated D-channel using thefollowing overlay and commands:LD 96 DIS DCH XIf the card is an NTBK50 with the NTBK51 DDCH daughterboardattached, disable the associated downloadable D-channel using thefollowing overlay and commands:LD 96 DIS DCH XLD 96 DIS MSDL X2 Disable the Clock Controller using these commands:LD 60 DIS CC 03 Disable the PRI pack using these commands:LD 60 DIS L XNote: The LEDs on the front of the card change from green (enabled) tored (disabled.) In order for this to happen, the DIS MSDL command mustbe used, as in step 1.4 Hold the circuit card by the lock latches, unlock the latches, and slide thecircuit card out of the Media Gateway. If required, remove anydaughterboards which can be attached. See Procedure 15 on page 129.5 On the replacement PRI circuit card, set any switches and install anydaughterboards as required. Hold the card by the lock latches and slide itinto its assigned slot until it connects with the backplane.6 Enable the Clock Controller and the PRI in their corresponding overlays:LD 60 ENL CC 0LD 60 ENLL XThe associated DCHI/DDCH will automatically enable.
