How to change number of rings before voice mail activates

[EVJWinters]

I am using a BLU Studio X, with Android version 5.0.2,
I have been digging throughout my phone's settings but cannot seem to find a means to increase the number of rings before my voicemail activates. Currently it seems to pick up after 3 rings, which usually not enough time for me to grab my phone and answer the call.

I want to increase the number of rings to maybe 5 or 6 before Voice mail activates.

Can anyone tell me how to do this?

Thanks in advance!

 

[PapaGary]

This worked for me-

1. Dial *#61# and click Send. You will see your VM access number and the current ring delay time.
2. Write down the phone number displayed (including +1).
3. Dial **61*+1xxxyyyzzzz*11*30# and hit Send. +1xxxyyyzzzz is the number you wrote down previously, 30 is the delay in seconds. The delay can be set in 5 second increments, 30 is maximum.
4. Dial *#61# to verify that the new settings are active.

 

[EVJWinters]

Thank you very much PapaGary! That seems to have worked!