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MultiFRAD User Guide
Appendix D - Disabling the Internal DSU
Perform the following procedure if your WAN network has been upgraded to T1/E1 and you now want
to disable the MultiFRAD's internal DSU and use the back panel Trunk connection to obtain data
rates of up to 2.048 Mbps.
1
Turn off the MultiFRAD using the back panel Power switch.
2
Locate the access window (side slot opening) near the left front corner of the MultiFRAD.
3
Using a small flat blade screwdriver or similar tool, press down on DIP Switch 2
(Figure D-1) until it is even with all the other DIP switches; the internal DSU is now disabled.
Figure D-1. DIP Switch 2 Location and Functions
4
If your trunk connection is V.35 rather than the default RS232C, refer to V.35 Shunt
Procedure in Chapter 2 - Installation and move the Trunk shunt to the V.35 socket.
5
Disconnect the RJ-45 cable from the DSU jack and connect a trunk cable (Appendix A) to the
DB25 female TRUNK connector on the back panel of the MultiFRAD.
6
Reapply power to the MultiFRAD, then configure the Trunk port as the WAN connection.
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