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Ethernet Base Module and Interface Modules Passport 4400 Hardware Installation Manual
5-3
WAN Serial Interface Module
The WAN serial interface module provides additional port capability, identical to
port 1 on the base module. The module supports RS-232, V.35, V.36, and X.21
interfaces, determined by the cable used. The module can support both DTE and
DCE modes.Both Port2 (MPANL port) andPort 3(WAN Backup port)cansupport
the WAN serial interface module.
Figure 5-4. Front and Back View of the WAN Serial Interface Module
Note: The interface module must be inserted into the unit with
the component side facing down.
Rear View