Nortel Networks 553-3001-211 manual Address of LEI to the MMI, E1 framing

Page 252 of 894 NT5D33 and NT5D34 Lineside E1 Interface cards

of the motherboard circuit card as shown in Figure 41 on page 254. The settings for these switches are shown in Table 91 on page 255 through Table 94 on page 258.

When the LEI card is oriented as shown in Figure 41 on page 254, the dip switches are ON when they are up, and OFF when they are down. The dip switch settings configure the card for the following parameters:

MMI port speed selection

This dip switch setting selects the appropriate baud rate for the terminal or modem (if any) that is connected to the MMI.

Line Supervisory Signaling protocol

The LEI is capable of supporting loop start or ground start call processing modes. Make the selection for this dip switch position based on what type of line signaling the Customer Premise Equipment (CPE) supports.

Address of LEI to the MMI

The address of the LEI to the MMI is made up of two components:

•the address of the card within the shelf

•the address of the shelf in which the card resides

These two addresses are combined to create a unique address for the card. The MMI reads the address of the card within the shelf from the card firmware; the address of the shelf must be set by this dip switch.

The shelf address dip switch can be from 0 to 15, 16 being the maximum number of lineside E1 IPE shelves (a maximum of 64 LEI cards) capable of daisy chaining to a single MMI terminal. For ease, it is recommended that this address be set the same as the address of the peripheral controller identifier in LD 97 for type: XPE. However, this is not mandatory, and, since the dip switch is limited to 16, this will not always be possible.

E1 framing

The LEI is capable of interfacing with LTU equipment either in CRC-4 or FAS only framing mode. Make the selection for this dip switch position based on what type of framing the LTU equipment supports.

553-3001-211 Standard 2.00 September 2004