The IP400 Office WAN 3 10/100 module provides three WAN connections (X21, V35 or V24 via a 37way D Type socket and using an appropriate connector cable). Line speeds up to and including 2Mbps are supporting on each interface, the carrier providing the line dictates the actual operating speed i.e. in some territories the maximum speed may be 1.544M. These interfaces are identical to the single connection provided as standard on the IP406 and IP412 platforms.

The IP400 Office WAN3 10/100 may be connected to the IP406 and IP412 platforms to provide additional WAN ports. Each platform, except Small Office Edition, can support up to two WAN3 10/100 modules. The IP400 Office WAN3 connects to the base unit through the Local Area Network via a 10/100Mbps connection and does not use an expansion port on the control unit.

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