NEC Univerge sv8500 Manual page 3086

STEP 3: Select either "1. America" (by pressing "1" key) or "2. Japan" (by pressing "2" key).
Dial Tone sounds immediately after pressing "1" or "2" key.
Note:
STEP 4: The display changes as follows. You hear Dial Tone from the speaker at the maximum volume.
STEP 5: After hearing the Dial Tone, press Exit key to go back to the Simple Test Mode Menu.
Simple Test Mode Menu
441.Test Call On
2.Call Test Address
3.Key Test(Random)
4.Key Test(Seq.)
5.Voice Loopback
6.Speaker Test
Up Down
Exit
4461.America
2.Japan
Exit
Speaker Test Start!!
Dial Tone On!!
Exit
VOL.3-599
CHAPTER 4 CONFIGURATION SETUP