Fault pass though
RC901-FE4E1 provides Fault Pass Though (FPT) function for special
requirements.
In case of any E1 link was out of work, RC901-FE4E1 could transmit the
Ethernet packets in the other available E1 links automatically, until all E1 links were
not available.
And RC901-FE4E1 supports IEEE 802.3d Spanning Tree.
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