CHAPTER 4. Module and Internal Option Card Installation
4-20
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WTE-2SM (2-Port Serial Mini Module)
This Mini module provides two serial ports, each running in either DTE or
DCE mode at a data rate of up to 8.0 Mbps. The interface mode for each port
may be independently selected as V.35, RS-232/V.28, RS-449/V.11, EIA-530,
EIA-530A, or X.21/RS-422.
Figure 4.23 WTE-2SM Network Module
The following table explains the LEDs states in detail.
LED
Indication
& Color
Description
Green All
diagnostics pass, and the Network Module is operational.
RDY
Off
Power down or removal status.
Green
Green indicates normal operation. The module is
connected to the external DSU, and the signals TA (DTE
available) and CA (DCE available) are active.
Red
Red indicates serial interface error. Mismatch between
serial cable and interface type or operation mode.
Amber
Loopback mode on
LNK 0
LNK 1
Off
LED off indicates that the port is neither connected to the
DSU nor in loopback mode.
This module is typically connected as shown below:
Figure 4.24 Connecting the WTE-2SM Network Module
SERIAL0
SERIAL1
LNK1
LNK0
RDY
WTE-
2SM
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