1 —  ONT and MDU overview
Alcatel-Lucent 7330/7302 ISAM FTTN R04.02.42a March 2011 1-9
3FE 54199 AAAA TCZZA Edition 01 ONT Product Information Guide
Package A ONT considerations and limitations
Table 1-2 lists the considerations and limitations for Package A ONTs.
Table 1-2 Package A ONT considerations and limitations
H B-0404-A 7 G.984.3 compliant AES with 
operator enable/disable on per 
port-ID level
802.3 compliant 
10/100/1000BASE-T Ethernet 
interfaces using RJ-45 ports
four E1/T1 interfaces using RJ-48C 
ports
MEF-8 packetization for TDM 
transport over GPON
subscriber location ID (SLID)
IP video with multistage IGMPv3 or 
IGMPv2 snooping
up to 64 video multicast streams 
shared by 4 GbE ports
G.984.3-compliant multicast using 
a single GEM Port-ID for all video 
traffic
See Package H ONT 
considerations and 
limitations
Package
 type
ONT or MDU 
mnemonic
See UDS 
chapter
Features and functions Considerations and 
limitations
(6 of 6)
Considerations and limitations
No support for per VLAN protocol downstream tagging mode
In SVLAN cross-connect tunnel mode:
• use non-overlapping pbits since the use of the same pbits on two or more VLAN ports results in 
a mismatch alarm
• downstream frames sent with a single tag normally sent out on the user-side as untagged, will 
instead be sent as priority tagged
When using CVLAN translation, or when the same queue is used for multiple pbits, the highest pbit 
value in the queue in the downstream direction will be selected to stomp the pbit in the packet
Simultaneous configuration of a CVLAN port and an S-Tunnel on the same UNI will only be supported 
if these services are provisioned with non-overlapping pbits
The same VLAN port must be used when employing both protocol-based VLAN for PPPoE and 
IPoE-based VLANs
When the VLAN is translated, the pbit value must be modified and the highest pbit value is mapped 
to that GEM port
When more than one Ethernet port is in VLAN translation mode, or set to flexible mode with IGMP 
channels created, the USERSIDE VLAN IDs of those services are different. All downstream multicast 
packets will be tagged on the UNI port with VLAN ID of 4094
Maximum use of multicast on 1 Ethernet port at a time
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
(1 of 2)