Uniden UIP312 - Manual (Page 39)

9.4.2 Ring Type
You can have different ring types for LINE1 and LINE2. Once the ring types are set
differently between LINE1 and LINE2, you will hear different ring when a call came in on
LINE1 from when a call came in on LINE2.
1. Press the MENU button.
On the MENU screen, select Phone Setting.
2. There are four items on the Phone
Setting screen.Select Ring Type
3. Select Line 1 or Line 2.
Press the up / down or left / right arrow key
to select different ring types for incoming
calls. There are 6 different ring types.
Page 35