NEC Univerge sv8500 Manual page 3068

STEP 3: Select whether to send RTP Warning Tone to the terminal.
When selecting "1. Automatic", RTP Warning Tone is sent to the terminal according to directions
from the System.
When selecting "2.ON", RTP Warning Tone is sent to the terminal.
When selecting "3.OFF", RTP Warning Tone is not sent to the terminal.
"Automatic" has been set by the default.
Note:
STEP 4: Press OK key and go back to the Audio Settings Menu.
STEP 5: Press Exit key on the Audio Settings Menu to go back to the Audio & Visual Settings Menu.
STEP 6: Press Exit key on the Audio & Visual Settings Menu and go back to the Main Menu.
STEP 7: Press Save key on the Main Menu to save the assigned data.
4.3.1.9 DTMF Play Mode
On the DTMF Play Mode parameter, determine whether to play back the DTMF tone.
This parameter is available for DtermIP (SIP) with Firmware Version 3.0.0.0 or later.
Note:
STEP 1: Select "1. Audio Settings" by pressing "1" key on the Audio & Visual Settings Menu.
STEP 2: Audio Settings Menu appears. Select "9. DTMF Play Mode" by pressing "9" key.
1.Automatic
2.ON
3.OFF
Up Cancel
Down
Audio & Visual Settings Menu
31.Audio Settings
2.Visual Settings
VOL.3-581
CHAPTER 4 CONFIGURATION SETUP
OK
Exit