Netopia 435 Reference Manual page 63

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