Manual

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The purpose of this appendix is to describe how to make connecons to Comrex ACCESS MulRack.
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The Comrex ACCESS MulRack allows users to make up to 5 separate AES67 connecons. This feature allows
addional setup including the assignment of separate UDP ports for each MulRack Instance. UDP 9000 is the
default port for BRIC Normal connecons. Instance #1 on MulRack will use the UDP 9000 port by default. Comrex
generally recommends End Users with MulRack then use UDP 9002-9005 for instances #2-5 respecvely, leaving
UDP 9001 open for Crosslock.
When making Remote Entries for MulRack, each instance needs to be its own separate entry. For BRIC Normal
connecons, this is done by entering the Public IP Address the MulRack is behind followed by “:9000” for instance
#1, and “:9002”, “:9003”, “:9004, and “:9005” for instances #2-5 respecvely. For example, Creang a BRIC Normal
entry for instance #3 on a MulRack would read: “<IP ADDRESS>:9003”.
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Manual CrossLock connecons require special conguraon opons on both sides of the link. This primarily
involves programming the Switchboard ID for each unit (or primary Ethernet MAC Address) into the outgoing
sengs on the codec on opposite side of the link. This process for outgoing calls is described above. What isn’t
menoned is also important: the MAC/Switchboard ID of the outgoing unit must also be programmed into the unit
receiving the call.
Note that MulRack instances #2-5 have special Switchboard IDs consisng of the primary Ethernet MAC followed
by a sux (e.g., 00:01:0c:c0:78:19-4 for instance #4).
This is done by creang an outgoing connecon describing the far-end unit, even if it is never actually used for
outgoing calls. In the case of this “dummy” entry, it’s not actually important for the IP address eld of the far-end
unit to be correct. The entry must be enabled for CrossLock operaon and it must have the correct Switchboard ID/
MAC address of the far-end unit.
In the special circumstance where the default CrossLock port of UDP 9001 can not be used, (e.g., several MulRack
codecs sharing a single IP address) then manual CrossLock connecons get extra complex. For more informaon on
these sengs, refer to the Technote “Making CrossLock connecons on non-standard Ports.”
Note: Comrex Devices must be running at least Firmware version 4.5 to designate MAC Address suxes when
making Manual Crosslock Remote Entries.
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