Nortel Networks 553-3001-211 manual 378 of 894 NT6D80 Msdl card

Page 378 of 894 NT6D80 MSDL card

that support the same functions. For example, three cards supported with the MSDL (NT6D80) are QPC757 (DCHI), QPC513 (ESDI), QPC841 (SDI) and NTSD12 (DDP).

Though the MSDL is designed to coexist with other cards, the number of ports supported by a system equipped with MSDL cards is potentially four times greater than when using other cards. Since each MSDL has four ports, representing a single device, a system can support as many as 16 MSDL cards with a maximum of 64 ports.

Physical description

The MSDL card is a standard size circuit card that occupies one network card slot and plugs into the module’s backplane connector to interface with the CPU bus and to connect to the module’s power supply. On the faceplate, the MSDL provides five connectors, four to connect to I/O operations and one to connect to a monitor device that monitors MSDL functions. Figure 79 on page 379 illustrates major MSDL components and their locations on the printed circuit card.

Note: Switches S9 and S10 are configured to reflect the device number set in LD 17 (DNUM). S10 designates tens, and S9 designates ones. For example, set device number 14 with S10 at 1 and S9 at 4.

553-3001-211 Standard 2.00 September 2004