Alcatel-Lucent 7342 - Soc Onts with Four 10;100;1000 Base-T Ethernet Ports; Soc Onts with Eight POTS Ports; Figure 5-7 Four 10;100;100 Base-T Ethernet Port Onts; Figure 5-8 Soc with External DSP for SOHO and BONT Onts

5 — SoC based ONT functional blocks
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 5-9
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
5.6 SoC ONTs with four 10/100/1000Base-T Ethernet ports
In order to support four 10/100/1000 Base-T Ethernet ports, an Ethernet switch is
connected to the two GMII from the Ethernet MACs on the SoC. The Ethernet switch
provides IGMP packet replication and internal VLAN tagging to direct traffic to the
proper Ethernet port; see Figure 5-7.
Figure 5-7 Four 10/100/100 Base-T Ethernet port ONTs
5.7 SoC ONTs with eight POTS ports
Both the SOHO and business ONTs provide up to 8 POTS connections. To support
these additional POTS interfaces, the DSP within the SoC is disabled, and all VoIP
traffic goes to an external DSP; see Figure 5-8.
Figure 5-8 SoC with external DSP for SOHO and BONT ONTs
Note — The RF video amplifier is integrated with the triplexer. It is
shown split-out in Figure 5-7 to illustrate the functionality.
Power
Converter
SOCGPON
POTS
Ethernet
switch
RJ-11
RJ-45
F
Video amplifier
Triplexer
1939
4
Power
Converter
GPON
Ethernet (2)
RJ-11
RJ-45
F-type
coaxia
l
Video amplifier
Triplexer
1942
0
POTS (8)
External
DSP
SOC