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Caution: You can only install I/O modules in the slots labeled Slot 1 through
Slot 4 on the Alpine 3804, or Slot 1 through Slot 8 on the Alpine 3808. Forceful
insertion can damage the I/O module and the connector pins on the backplane.
Ports and Connectors
The WM-4T1i module is shown in Figure 1-1.
Module status
LEDs
Figure 1-1: WM-4T1i Module
The WM-4T1i module has four T1 ports and two general purpose 10/100 Ethernet
ports. The WM-4T1i also has eight internal loopback ports. Internal loopback ports
allow you to configure bi-directional rate-limiting without tying up any of the external
ports for ingress rate shaping. Internal loopback ports are marked with the notation
"iL" when displayed on the command line or with ExtremeWare Vista Web access.
The WM-4E1i module has four E1 ports in place of the T1 ports found in the WM-4T1i
module. It is identical in all other respects.
The WM-1T3i module is shown in Figure 1-2.
WAN Module Installation and User Guide
Note: Tighten the screws before inserting additional modules. If you insert
additional modules before tightening the screws, you might unseat modules
that you have not secured.
T1 ports
Ports and Connectors
10/100 Mbps ports
38_WM4T1i
1-3
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