![background image](http://html.mh-extra.com/html/nec/dt750/dt750_user-manual_248958035.webp)
28
• TO ENABLE/DISABLE DTMF TONE
The procedure below shows how to enable/disable
RTP alarm.
While indicating the current time on LCD, press
key to open the
Menu
screen.
Select
Setting
and then press
(
Enter
)
or
OK
soft
key. (or press
key.)
Select
User Setting
and then press
(
Enter
)
,
(
Right-cursor
)
or
OK
soft key. (or press
key.)
Select
Talk
and then press
(
Enter
)
,
(
Right-
cursor
)
or
OK
soft key. (or press
key.)
Select
DTMF
Tone
and then press
(
Enter
)
,
(
Right-cursor
)
or
OK
soft key. (or press
key.)
Menu
5
↓
↓
Back
OK
Tool
Directory
History
Setting
Presence
Favorite
Config
Call Func.
[Menu]
1
1
↓
Back
OK
1
2
Data Backup/Restore
[Setting]
3
Download
User Setting
1/1
2
2
OK
Back
1/1
[User Setting]
1
2
3
4
5
6
0
↓
Display
Change Password
Peripherals
Setting Reset
Security
Incoming Call
Talk
↓
2
2
Summary of Contents for DT750
Page 2: ......
Page 4: ......
Page 7: ...iii TABLE OF CONTENTS 6 MENU LIST MENU LIST FOR DT750 170 7 ONLINE MONITORING ...
Page 55: ...48 OK Password Error Password ...
Page 162: ...156 ed the display changes as follows STEP 5 Press Enter or OK soft key OK Directory Deleted ...
Page 190: ...Printed in Japan 0803 001 ...
Page 191: ......