Alcatel-Lucent 7330 Product Information Manual page 217

13 — I-241G-A unit data sheet
Considerations and limitations
For C forwarder and S+C CC forwarder, if the VLAN port uses regenerated profiles or regenerated
pbits, then the downstream traffic can only flow with the derived pbits
When either tip or ring is grounded, DGNONTPOTS tip to ground and ring to ground restrictive
measurements are simultaneously reported as 0 ohms
(2 of 2)
In order to provide four GE ports on the I-241G-A indoor ONT, an Ethernet switch
has been added between the SoC and the Ethernet ports; See Figure 13-5. The
Ethernet switch provides the following features:
•
IGMP packet replication for multicast channels
•
internal VLAN tagging to direct traffic to appropriate ports and priority queues
IGMP packet replication allows the I-241G-A to support IPTV on all four Ethernet
channels at the same time. Internal VLAN tagging allows traffic to be routed and
prioritized between the two Ethernet MACs on the SoC and the Ethernet switch and
the appropriate subscriber RJ-45 ports.
Downstream multicast traffic received on a user side C-VLAN tagged port will use
VLAN ID 4094 and have a P-bit value of 6.
The I-241G-A ONTs do not support downstream priority-tagged traffic on their
ONT UNIs. Priority-tagged frames are dropped. When an unstacked VLAN is
provisioned on the ONT UNI, downstream traffic that is single tagged is dropped.
13-12
Figure 13-5 Ethernet switch
Power
Converter
GPON Triplexer
Note —
The RF video amplifier is integrated with the triplexer. It is
shown split-out in Figure
December 2010
ONT Product Information Guide Edition 01
POTS
SOC
Ethernet
switch
Video amplifier
13-5 to illustrate the functionality.
Alcatel-Lucent 7330/7302 ISAM FTTN R04.02.41
RJ-11
RJ-45
F
19394
3FE 54017 AAAA TCZZA