Nortel-networks Circuit Card Manual de usuario Pagina 852

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Page 852 of 906 QPC513 Enhanced Serial Data Interface card
553-3001-211 Standard 3.00 August 2005
Each system can accommodate up to eight ESDI cards, for a total of 16
synchronous ports per system. The ESDI cards can be housed in the network
slots of any of the following modules:
NT5D21 Core/Network module (slots 0 through 7)
NT6D39 CPU/Network module (slots 1 through 9 and 13)
NT6D60 Core module (slots 0 through 5)
NT8D35 Network module (slots 5 through 13)
NT9D11 Core/Network module (slots 0 through 8)
Note: When as ESDI card is installed in an NT6D60 Core module, an
NT8D34 CPU module, or slot 13 of an NT6D39 CPU/Network module
in a dual-CPU system, any I/O device connected to the card does not
function when the CPU in that module is inactive.
Physical description
The ESDI card circuitry is contained on a 31.75 by 25.40 cm (12.5 by 10 in.)
printed circuit board. The front panel of the card is 2.54 cm (1 in.) wide. See
Figure 182 on page 853. The front panel is equipped with an Enable/Disable
(ENB/DIS) switch and a red LED. The LED lights when the following
occurs:
the ENB/DIS switch is set to DIS
both ports are disabled in software
none of the card’s ports have been configured in software
the switch settings on the card do not match the settings programmed in
software
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