ZETRON 025-9581M, Installation And Maintenance Manual

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Installing the UBAM™ Components
Installing the UBAM™ Components
UBAM™ is an acronym for UDP Broadcast Agent Manager. The two software utilities
enable the VoIP Server to use the UDP mode for sending out all-call voice information
even though the routers connecting various subnets in the system have been configured to
not pass UDP transmissions.
There are two utilities: UBAM Listener and UBAM Repeater. The UBAM Listener is
installed in the same subnet as the VoIP Gateway Server. If the total number of subnets
used does not exceed 10, the UBAM Listener may be installed on the same machine as the
VoIP Gateway Server. If it is installed on another machine, that machine must be
connected to the same subnet as the server machine. The UBAM Repeater is installed on a
computer in each of the subnets used by the Fire Station Alerting system.
Whenever the VoIP Server issues a UDP message on its own subnet, the UBAM Listener
sends that same message to all of the UBAM Repeater computers using the TCP mode.
How often and where the two utilities end up being installed depends on how routers are
used to connect the various subnet segments throughout the network used to support the
Fire Station Alerting system.
As shown in Figure 10 , when the subnet segments are connected back to the main segment
in a hub & spoke fashion, the UBAM Listener is installed once on the main segment and
the UBAM Repeaters on all the other subnet segments are configured to connect to it.
Note: Because of the role that both the UBAM Listener and Repeater play in making VoIP
communication possible, the computers on which they are running become a vital part of
the hardware that makes up the Fire Station Alerting System. While the UBAM
applications themselves place no particular requirements on the computers used, the fact
that they are a vital part of the overall system requires that they be thought of as being on a
par with servers.
Note Whenever possible it is recommended that all the elements of a
VoIP system be on the same subnet. If this is not possible, then the
UBAM utilities should be used to get VoIP traffic around routers, or
you must open UDP broadcast source ports 5000 through 5255 and
destination port 1459 on each of the routers involved.