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SERVSWITCH™ SUMMIT
Appendix B: USM Direct Mode
A ServSwitch™ Summit USM set to Direct Mode can be directly connected to a
CIM, either temporarily for emergency “crash cart” access or permanently for non-
switched extension purposes, without having to go through a Base Unit. To make
this kind of “Direct Mode” connection, take these steps:
1. If you haven’t already done so, follow the instructions in steps 5a and 5b of
Section 4.2 to attach the CIM to the CPU.
2. If you haven’t already done so, plug in and turn on the CPU.
3. Power off the USM.
4. Run CAT5 cabling directly between the USM and the CIM.
5. At the user station attached to the USM, simultaneously press and hold down
the keyboard’s [Ctrl] and [Alt] keys.
6. Continue holding down these keys while you power on the USM. The USM
should beep twice; after the second beep, it should display a “DIRECT Mode:
CIM connected” message on the monitor.
7. Release [Ctrl] and [Alt]. The “DIRECT Mode” message will continue to be
displayed for ten seconds, then disappear.
While the USM is in Direct Mode, if the CAT5 cabling between the USM and the
CIM becomes disconnected at any point for more than three to four seconds, the
USM will exit Direct Mode. To re-establish Direct Mode, repeat the above steps.
To return a USM that’s in Direct Mode to normal operation, take these steps:
1. Power off the USM.
2. Disconnect the opposite end of the CAT5 cabling from the CIM.
3. Connect the opposite end of the CAT5 cabling to a user port of a Base Unit.
4. Run other CAT5 cabling from the channel port of a Base Unit to the CIM.
5. Power on the USM.
