Nortel Networks 553-3001-211 manual 840 of 894 QPC513 Enhanced Serial Data Interface card

Page 840 of 894 QPC513 Enhanced Serial Data Interface card

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 179 on page 841. 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

553-3001-211 Standard 2.00 September 2004