Change Number of Rings on Samsung Phone before Voicemail

[lparachute1]

Hi,

I tried dialing the numbers on several previous posts to change the number of rings on my Samsung cell phone but it keeps defaulting to the 5 rings even though I set it for 3 rings (15 seconds).  As an example, I dialed (from Great Neighbor):
**61*17783240667*11*15#

I do notice that after I send, it comes back with the following error message:

Call forwarding
When no reply for All Speech Services
Connection problem or invalid MMI code.

I tried the different numbers posted and same results. 

[softech]

@lparachute1 it used to work.  But conditional forwarding was broken since couple months. ago, the trick no longer works. 

So in short, you cannot control the number of ring before sending the calls to VM