User's Guide

Wireless Matrix MBS2 User Guide Document MBUD-0086v1b
Keyfob Receiver
For Alert and Personal Alert features, the MBS2 uses a 315 MHz keyfob receiver and inverted-F
antenna. An external keyfob transmitter is also provided.
FEATURES
Multi-Network Routing
The Multi-Network Routing (MNR) function enables the MBS2 to send communications over the
best available network, as determined by a “Primary Network” setting and the coverage situation.
The routing algorithm is based on a parameter called the “Active Network”, and is explained in the
sections below.
The MBS2 is configured during Commissioning to have a “Primary Network”, or a preferred
network. The MBS2 will always use the Primary Network as the Active Network when within
Primary Network coverage. The Secondary Network will become the Active Network only if no
Primary Network coverage is available.
For instance, if the Primary Network is satellite, and the MBS2 is in satellite coverage, the Active
Network for the MBS2 is satellite. If the MBS2 leaves satellite coverage but is still in terrestrial
wireless coverage, the Active Network would become terrestrial.
Active Network (AN) Determination
The MBS2 periodically evaluates the Satellite and GPRS Network coverage and updates its
Active Network based on a predefined Active Network Algorithm (not to be confused with the
MNR algorithm). In general, if a change in its Active Network occurs, the MBS2 will inform the
WIPG of the new Active Network value by sending an Active Network Message (ANM), so that
the WIPG can use the Active Network for its own MNR algorithm.
Magic Packet
WAW offers the Magic Packet (MP) feature to conserve battery life on a CSC while maintaining
Wireless Tether communications upon demand. Thus, a CSC can enter sleep mode and be
awaken by a Magic Packet whenever the Customer Host has data to send to the CSC (provided
that the CSC is in WLAN range of the MBS2). The Magic Packet Feature is described in more
detail in _________.
In-Yard Access
In-yard access provides the ability to send and/or receive data with lower latency, high
throughput, and reduced airtime expense by routing the data directly through a Customer-owned
In-Yard 802.11 network
When the MBS2 arrives in an In-Yard district, the MBS2 will associate with the AP at the district.
On successful association, the CSC sends or receives traffic directly to or from the customer
corporate network. As soon as the MBS2 leaves the AP WLAN coverage area, it will go back to
its original configuration (i.e., WAW IP).
March 04, 2004 Page 10