Comrex BRIC-Link Product Manual page 46

fIgure 29 CrossLoCk VPN
One limitation of CrossLock is that each codec that joins the CrossLock VPN must be familiar with the others. This
process takes place automatically when Switchboard is used. As detailed in section IX, connections that don't use
Switchboard need special configuration.
CrossLoCk CoNNeCtIoNs to MuLtIraCk
Without CrossLock active, a codec will make BRIC Normal connections to MultiRack instance #1 on port 9000.
Instance #2 will connect on 9002 and instance #3 will connect on 9003. These are on the MultiRack side, and the
remote codecs will all use their default ports of 9000.
The CrossLock connection between the Comrex hardware happens over a single port (9001) but the BRIC Normal
connections take place virtually on their usual legacy ports within that VPN. The system will show these virtual
connections happening on ports 9000, 9002 and 9003 (these are the BRIC Normal ports), but the only actual
connection between hardware is happening on 9001. For this reason, if you only intend to make CrossLock
connections to MultiRack, only UDP port 9001 needs to be open or forwarded.
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