NEC DSX Software Manual page 171

Extension Override
To customize ringing for your extension's outside calls:
[Menu + Ring]
1.
[Menu + MORE + Ring]
[Assign]
2.
[Asgn]
3. Select the ringing mode you want to change.
[Day Ring]
[Day]
[Night Ring]
[Nght]
[Delay Ring]
[Dely]
[Exit]
[Exit]
a. For the ringing mode selected, select the Ring Type.
DSX Software Manual
Using Extension Override
Select the Distinctive Ringing options.
Select Extension Override.
Select day ring.
Select night ring.
Select delay ring.
Select to back up to the previous step without making any changes.
[RING "A" + EXIT]
Select Ring Type A.
["A" + MORE + EXIT]
[RING "B" + EXIT]
Select Ring Type B.
["B" + MORE + EXIT]
[RING "C" + EXIT]
Select Ring Type C.
["C" + MORE + EXIT]
[CO LINE]
Select to have ringing follow Line Override.
[MORE + Line + EXIT]
[Exit]
Press repeatedly to back up step-by-step.
[Exit]
Distinctive Ringing
In these instructions:
[Super Display Soft Key]
[Keyset Soft Key]
Features ◆ 141