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Chapter 1: Features Overview
38 SmartSwitch Router 2000 Getting Started Guide
Dual Serial and Quad Serial – C/CE Expansion Modules
The Dual Serial expansion module contains a single dual serial WAN port (two serial
ports located on one high density connector). The Quad Serial – C and Quad Serial – CE
expansion modules each contain two dual serial WAN ports. In addition, the Quad
Serial – C expansion module includes compression, and the Quad Serial – CE expansion
module includes compression
and encryption, for each WAN port. Figure 6 shows the
front panel of the Dual Serial WAN expansion module.
Figure 6. Front panel of Dual Serial WAN expansion module
Per-port Tx • Green – indicates when the port’s transceiver transmits packets.
• Orange – indicates when the port’s transceiver transmits flow-
control packets.
Per-port AN • Green – indicates that the expansion module is autonegotiating
the operating mode of the link between full-duplex and half-
duplex.
• Orange (intermittent) – indicates that autonegotiation is in
process.
• Orange (solid) – indicates a problem with autonegotiation
configuration.
• Red – indicates an autonegotiation failure. This fault may occur if
the link partner does not support full duplex.
• Off – indicates that autonegotiation has been disabled or the link
is down.
Table 12. 1000BASE-LX expansion module LEDs (Continued)
LED Description
1,2
Tx
Rx
Link
Dual Serial SSR-2-SER
1 2