Netopia Router PN Series - Manual (Page 78)

3-6 Reference Guide
You may use either or both of the EtherWave ports to connect the
Netopia Router, as needed. No termination is necessary, even when
the router is at the end of your EtherWave network.
The Netopia Router at the end of an EtherWave daisy chain
EtherWave
Netopia
EtherWave