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92 NTBK51 DDCH installation and removal
The DDCH can be mounted on any NT5D97 DDP2 card. Set the address
for the DDCH (see the switch settings section to set the address). If a
DDCH is present on a DDP2 card then an external D-channel should not be
connected to J6. If a DDCH is present the LED "DDCH" lights up.
CAUTION
The static discharge bracelet located inside the cabinet must be
worn before handling circuit cards. Failure to wear the bracelet
can result in damage to the circuit cards.
Procedure 5
Install the NTBK51 on the NT5D97 dual-port DTI2/PRI2 card
Step Action
1
Unpack and inspect the DDCH daughterboard.
The DDCH comes with four standoffs so that it can be mounted
onto the NT5D97. These are easily pushed into four corresponding
mounting holes on the DDP2.
2
Mount the DDCH so that it mates with P1 and P2 on the NT5D97
motherboard.
Note: P 1 and P 2 contain (40+30) sockets as the NTBK51AA
respective pins (40+30), which enables the technician to "mate"
them. This is applicable for the NT5D97AA/AB. The NT5D97AD
has 44+34 sockets. In order to place the NTBK51AA (40+30
pins), place the NTBK51AA inside P1 and P2. Start from their
lower edge. (The remaining "free" sockets (4+4) in P1 and P2
are in their upper edge.)
3 Set the DDP2 ENB/DIS faceplate switch to Enable (ON). The DDCH
LED then flashes three times.
—End—
Remove NTBK51 DDCH from NT5D97 dual-port DTI2/PRI2 card
Removal procedures for the NTBK51 DDCH are the same for all Large
Systems.
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Copyright © 2003-2007, Nortel Networks
.