Figure 1-1 Software Architecture Levels - Alcatel-Lucent 7330 Product Information Manual

1 — ONT and MDU overview
The following list provides a description of the hardware and software functions
supported for all ONTs.
1 The hardware functional blocks are described in the ONT unit data sheets.
2 Low level device drivers control elements of each functional block on an ONT.
3 The embedded Linux kernel provides the operating system for the ONT.
4 Each ONT supports the following protocols:
5 SOC-based ONTs rate-limit the number of control packets for protocols IGMP,
DHCP, and ARP to 10 control packets per second by ONT UNI port. IGMP is
not rate-limited for an ONT UNI port if an IGMP channel is provisioned for the
port.
6 ONTs provide a file storage database (flash or SDRAM).
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Figure 1-1 Software architecture levels

File storage
Database
Embedded Linux Operating System
•
TCP/IP
•
ICMP
•
IGMP version 2 (RFC 2236) and 3 (RFC 3376)
•
FTP
•
DHCP
•
ARP
•
VoIP (including SIP mode 1 and 2, H.248 (Megaco), etc.)
•
PPPoE
•
UDP
March 2011
ONT Product Information Guide Edition 01
Service Management Applications
Protocols
Low Level Device Drivers
Hardware Functional Blocks
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