Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario

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 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