Is the following description correct? The key parameters of ODN network are attenuation, insertion loss, and return loss.

Is the following description correct? In a GPON network, the ONU ID must be unique under a PON port.

What are the characteristics of ATM cells?

What are the queue scheduling methods supported by MA5600?

At a certain UA5000 site, due to resource constraints, the entire frame of ADSL users need to pass a VLAN upstream to the IP network. At this time, why should the upstream VLAN in the IPM board be defined?