The Class D multicast address range is from 224. 0. 0. 0 to 238. 255. 255. 255。

Detection principle for GPON Type B single-homing protection switching: The standby port receives and transmits optical signals. If the standby port fails to detect upstream optical signals for four consecutive dynamic bandwidth assignment (DBA) allocation periods, an upstream optical signal interruption occurs, triggering automatic protection switching.

What can cause erratic display in IPTV programs?

(Radio) 10G GPON system downlink wavelength is

Assume that there are 500 broadband users with a concurrency rate of 40%, penetration rate of 50%, online bandwidth of 4 Mbit/s, duty cycle of 12.5%, 1 channel, and coverage rate of 70%. Then the bandwidth is 35 Mbit/s.

The QoS should be planned according to service requirements. Generally, a service with a higher priority adopts the ( ) scheduling mode.