Nortel Networks 553-3001-211 manual Procedure Connecting two or more LEIs to the MMI terminal

NT5D33 and NT5D34 Lineside E1 Interface cards Page 267 of 894

128 LEIs can be linked, located in up to 16 separate IPE shelves, to one MMI terminal using the daisy chain approach.

If only one LEI is will be installed, cable from the DB9 male connector labeled “P5” (toward MMI terminal) to one of the COM ports on the back of any TTY, a PC running a terminal emulation program, or a modem. For installations of only one card, no connection is made to the DB9 female connector labeled “P4” (away from MMI terminal).

If two or more LEIs are being installed into the system, the MMI port connections can be daisy-chained together so that only one MMI terminal is required for up to 128 LEIs. See Figure 42 on page 268. Cards can be located in up to 15 separate IPE shelves. Start with any card slot in the IPE shelf and connect to any other card slot. Connected card slots do not need to be consecutive.

Procedure 13

Connecting two or more LEIs to the MMI terminal

Follow this procedure for connecting two or more LEIs to the MMI terminal:

1Cable the DB9 male connector labeled “P5” (toward MMI terminal) to one of the COM ports on the back of any TTY, a PC running a terminal emulation program, or a modem.

2Make the connection from the first card to the second card by plugging the DB9 female connector labeled “P4” (away from MMI terminal) from the first card into the DB9 male connector of the second card labeled “P5” (toward MMI terminal).

3Repeat step 2 for the remaining cards.

4At the last card of the daisy chain, make no connection from the DB9 female connector labeled “P4” (away from MMI terminal).

5If two LEIs are too far apart to connect the “P4” and “P5” connectors connect them with an off-the-shelf DB9 female to DB9 male straight-through extension cable, available at any PC supply store.

End of Procedure

Circuit Card Description and Installation