Appendix: testing the console – Hitachi HCX5000I User Manual
Page 172
HCXTD840, Issue 1, July 2001
A-1
A
PPENDIX
: T
ESTING
THE
C
ONSOLE
Test switch
A test switch located on the back of the console enables
you to test the keys and lamps, and demonstrate certain
ringing characteristics. See
Your console cannot receive or originate calls while in the
test mode. Therefore, the test mode should only be entered
during low-traffic hours.