METRObility Optical Systems RADIANCE 10/100MBPS ACCESS OPTICAL NETWORK UNIT - Manual (Page 4)

4 Overview
Overview
The Metrobility Radiance 10/100Mbps Access Optical Network Unit (ONU)
offers the benefits of remote management while eliminating the expenses
associated an additional chassis and management card at the remote site. The
compact Access ONU is a complete standalone device designed for installation
at the customer premise, with no additional equipment. It supports 10Mbps and
100Mbps circuits, as well as auto-negotiation, ensuring compatibility with any
customer equipment. The Access ONU provides real time monitoring of line
quality, remote loopback and other WAN management features that allow a
network administrator in the central office to conduct preemptive trend analysis
and to isolate faults. Because problems are addressed locally without having to
send a technician to the customer site, the results are reduced maintenance costs,
greater efficiency, and faster response to customer requests.
Designed to operate with the ONU, a Radiance Access Line Card installed in the
central office is used to communicate, test and reconfigure the remote Access
ONU, without reducing the available bandwidth to the customer. This is
accomplished through Metrobility’s innovative Radiance
technology, which
enables the Access Line Card and ONU to receive and transmit special manage-
ment packets in an embedded side channel.
The Access Line Card and ONU continually exchange information in a master/
slave relationship through their fiber link. The Access Line Card serves as the
master, and the ONU as the slave. The master must reside in a chassis contain-
ing a Metrobility management card. The management card is accessible through
local software control via an SNMP agent such as Metrobility’s NetBeacon
™ ,
via HTTP with WebBeacon ™ , or via a serial port or telnet connection using the
command line interface. The ONU can be located up to 100km away and be
remotely controlled and accessed from the managed chassis.
Through NetBeacon, a network administrator in a central office can open a
dialog with the Access ONU and reset its hardware switch settings, monitor its
environmental parameters, or view port details and statistics. NetBeacon
provides extensive real-time and historical graphs to display information such as
the packet error rate and packet details. The administrator can also perform tests
on the remote link, without any bandwidth reduction, and isolate problems to
prevent downtime. This end-to-end visibility and testing of the network simpli-
fies network management and increases reliability.
The Access ONU performs various operations set through hardware switches or
remote management instructions. Among these functions are loopback and Far
End Fault (FEF). Loopback enables a port to return its incoming data back to