WAN Modules
Page 3-22
WAN Modules
The Omni Switch/Router currently supports the following Wide Area Network (WAN)
modules:
• WSX-S-2W Provides two serial ports that support Frame Relay or PPP.
• WSX-SC Provides four or eight serial ports that support Frame Relay or PPP
with data compression.
• WSX-FT1/E1-SC Provides one or two T1/E1 ports and one or two serial ports that
support Frame Relay or PPP with data compression.
• WSX-BRI-SC Provides one or two Universal Serial Ports (USPs) ports and one or two
ISDN-BRI ports that support Frame Relay or PPP with data compression.
All of these modules are described and illustrated in the sections beginning on page 3-27.
A
WSX switching module is actually a submodule, or daughtercard, that attaches to an Omni
Switch/Router High-Speed Module (HSX). The HSX contains RISC processors, RAM for holding
software image files, ASICs for performing switching, and Content Addressable Memory (CAM)
for storing MAC addresses. You plug your cable into the WSX submodule, but it is the HSX
module that connects to the switch’s backplane.
WAN Pinouts
The figures and tables on the following pages illustrate the pinouts used on Omni
Switch/Router WAN modules. Please note that the signal commonly knows as “remote loop-
back” (LL) is not supported on the WAN serial port (see WAN Serial Port Specifications on
page 3-25). In addition, CTP2, CTP1, and CTP0 are assigned to CS(B), DR(B), and CD(B),
respectively, on the serial port. The later are not used in the cable configurations that require
the former.
See Appendix B, “Custom Cables,” for information on cables used to connect the serial
connector to different interface types.
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