Nortel Networks 553-3001-211 manual Physical description, Self-test

NTCK16 Generic Central Office Trunk cards Page 781 of 894

Physical description

The NTCK16AX and NTCK16BX generic Central Office trunk cards have eight units. Each unit connects to the shelf backplane through an 80-pin connector. The backplane is cabled to the I/O panel which is then cabled to the cross-connect terminal. At the cross-connect terminal, each unit connects to external apparatus by Tip and Ring leads.

Switch settings

There are no option switches on the NTCK16AX and NTCK16BX generic Central Office trunk cards. All settings are configured in software.

Self-test

When the NTCK16AX and NTCK16BX trunk cards are installed and power is applied to them, a self-test is performed on each card. The red LED on the faceplate flashes three times, then remains continuously lit until the card is enabled in software. If the self-test fails, the LED remains lit.

Functional description

The NTCK16AX and NTCK16BX generic Central Office trunk cards support up to eight analog Central Office trunks. They can be installed in any IPE slot.

Both cards are exactly the same except for the Periodic Pulse Metering (PPM) feature. The NTCK16AX card supports internal 12/16 kHz PPM but the NTCK16BX card does not.

Common features

The NTCK16AX and NTCK16BX generic Central Office trunk cards:

•support the North American loss plan

•support loop start signalling

•support busy tone detection and supervision on a per unit basis.

•support battery reversal detection

Circuit Card Description and Installation