Alcatel-Lucent 7342 - Figure 6-6 Service Unit Functional Blocks; Plug-In Service Units; Table 6-16 OBC Functions

6 — LP MDU, MDU, and modular ONT hardware functional blocks
6-16 July 2008 Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06
ONT Product Information Manual Edition 01 3FE 51892 AAAA TCZZA
Table 6-16 OBC functions
Plug-in service units
The modular ONT provides a maximum of three plug-in service units. Each service
unit contains a motherboard that provides local switching, control, and management
functions. The service unit also contains the voice and data/video subsystems.
Figure 6-6 shows the function blocks of the service unit.
Figure 6-6 Service unit functional blocks
Functions Descriptions
Integrated security engine The integrated security engine supports DES, 3DES, MD-5, SHA-1,
AES, and ARC-4 encryption algorithms, as well as a public key
accelerator and an on-chip random number generator. The security
engine is capable of single-pass encryption and authentication, as
required by IPsec, IEEE 802.11i standard, and other security
protocols.
Dynamic host configuration
protocol (DHCP)
The DHCP function allows the modular ONT subsystems to obtain
their configurations, such as IP addresses, when they start up.
IGMP snooping The IGMP snooping function monitors IGMP message flows to maintain
a local multicast filter and forwarding database.
Voice over IP (VoIP) This is a derived VoIP service that supports interoperability with G6
voice gateway or a softswitch.
Very-high-bit-rate digital
subscriber line (VDSL2)
management
The OBC supports the VDSL2 management function.
Ping and trace route The OBC supports the ping and trace route function.
802.1x authentication The OBC supports 802.1x authentication.
SPI
Local switching, control and
management
Control bus
GMII
Remote
inventory
Temperature
sensor
1812
5
SU FPGA
configuration
SU FPGA
configuration
Voice subsystem
Data and video subsystem
TDM
TDM
AFE
CODEC/SLIC
(2 channel)
CODEC/SLIC
(2 channel)
Analogue front
end (AFE)
4 channels
Line
protection
function
Line
drivers
Line
protection
function
Line
drivers
4 SS-SMII
Service Unit (SU)
FPGA
6-port switch
MII
MPI
Digital signal
processor
(DSP)
4 channels
Digital signal
processor
(DSP)
8 channels
MPI