Samsung DS-5012L - Manual (Page 168)

Navigation Menus DS/ITP-5012L Phone User Guide
155
Off-Hook Volume
There are eight volume levels for the Off-Hook ringer. To set the level:
1.
Press the [Menu] button and use the direction buttons to select
Æ [3. OffHook Ring]
Then, press the [Enter] button.
2.
Press the [▼Volume▲] buttons to set
the volume level, and press the [Enter]
button.