User's Manual Part 1
1: Introduction
APCD-LM043-8.0 (DRAFT C) 3
• DHCP Relay: CCUs support DHCP relay, which, once enabled, allows end-user PCs
to automatically obtain their IP and DNS server addresses from the network operator’s
DHCP servers. DHCP relay simplifies the EUM installation even further and makes it
even easier for the modem to be installed by the end user.
• End-user Registration: All end user modems automatically transmit a registration
request to the LMS4000 system so they can access the wireless network. They can
only register if the network operator has authorized them in the CCU. This registration
guarantees that only approved subscribers can gain access to LMS4000 wireless
services.
• RADIUS Support: The LMS4000 system also supports RADIUS Authorization and
RADIUS Accounting for EUM registration.
• Remote System Configuration and Diagnostics: The network operator can
configure and monitor CCUs and EUMs from anywhere. This remote access allows
the operator to make configuration changes, download new features, and diagnose
problems remotely without having to visit distant network sites or end-user premises.
• Spectrum Analyser: The Spectrum Analyser tool is very useful for site surveys,
installation and troubleshooting. Functionally, it provides an indication of signal level
and interference, from external sources and from frequency re-use. On the CCU and
EUM, the radio analyze command will force the radio to step across the 900 MHz
ISM frequency band. At each frequency, it will measure and report peak, average and
noise floor powers. The radio will also report the presence and level of any packets
received from a WaveRider CCU3000 or NCL1900.
• SNMP Support: Using WaveRider-supplied SNMP MIBs, network operators can
integrate the LMS4000 with their existing network management system to allow
monitoring of CCUs and EUMs from an existing and/or centralized SNMP manager.
Once SNMP is configured, the operator can monitor system events, parameters, and
statistics in real time. Statistics can be processed in the SNMP manager to provide
alarms, trend data, graphical outputs, and derived performance data.
• Accurate Time Stamping (SNTP): The CCUs and EUMs can be programmed to
synchronize their internal clocks with one or more NTP servers. Time stamping
enables all logged events in the CCUs and EUMs to be correlated with events that
have taken place at other locations in the network or with events logged by equipment
installed outside the network, if this equipment is equipped with accurate time-
stamping. Accurate time-stamping facilitates diagnosis of complex network problems.
• Field-replaceable Equipment: In the event of an equipment failure, LMS4000
components are easily replaced with minimal or no disruption to the operation of other
components.
• System Upgradability: The LMS4000 network architecture supports orderly growth
from simple installations, through single-CCU CAP (Communication Access Point)
sites and multi-CCU CAP sites, to multi-CAP networks.
• Port Filtering: The LMS4000 network operator can configure CCUs and EUMs to
filter IP packets on specific TCP and UDP ports to improve network performance,
security, and privacy.
• Low Maintenance: CCUs and EUMs require no routine maintenance, other than
maintenance of their operating environments within the specified temperature and
humidity range.