6 — LP MDU, MDU, and modular ONT hardware functional blocks
6-6 July 2008 Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06
ONT Product Information Manual Edition 01 3FE 51892 AAAA TCZZA
Table 6-5 describes the OBC interfaces.
Table 6-5 OBC interfaces
Table 6-6 describes the OBC functions.
Table 6-6 OBC functions
Test and diagnostic functions
The motherboard provides the testing and diagnostic functions as described in
Table 6-7.
Table 6-7 Test and diagnostic functions
Interface Description
Micro wire Used to connect to the remote inventories and temperature sensors
on the LP MDU ONT motherboard and service board
PCI Used to connect the OBC to the Gigabit Ethernet multilayer switch
Local bus Used to connect to the LP MDU ONT subsystems for control,
provisioning, and status monitoring activities
Craft port (if enabled) Used by service personnel to access the LP MDU ONT for
administration and maintenance purposes
Function Description
LP MDU ONT testing Can initialize and perform a self-test of the LP MDU ONT
DHCP Allows the LP MDU ONT subsystems to obtain their configurations,
such as IP addresses when they start up
IGMP snooping Monitors IGMP message flows to maintain a local multicast filter and
forwarding database
VoIP Derived service that supports interoperability with a G6 voice
gateway or a softswitch
VDSL2 management Supports the VDSL2 management function
Ping and trace route Supports the ping and trace route function
802.1x authentication Supports 802.1x authentication
Function Description
Craft port Provided through a serial user interface (RS-232) to the OBC. Access is through
a DB-9 connector. This port is also available as a local craft interface for the
installation and trouble-shooting application of the LP MDU ONT.
Loopback Multilayer switch - MAC loopback that allows the MAC to get into an internal
loopback and transmit 100 packets for verification. The loopback is intended
for hardware lab testing only.
Temperature
sensor
Interfaces with the OBC.
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