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Cisco VG224 Voice Gateway Hardware Installation Guide
OL-5006-04
Chapter 2 Planning Your Installation
Interference Considerations
If you remove any module, you must either install a module in its place or install a cover plate over the
opening. All module openings must be either occupied or covered to prevent electromagnetic
interference.
For advice on the prevention of electromagnetic interference, consult experts in radio-frequency
interference (RFI).