What correct mobile MMI code extends ringtime to 30 seconds as *61**121**30# is not O.K.

[PENGUINV]

What MMI code is used to extend ringtime to 30 seconds.

Using Android phone with TPG  SIM in Australia

[PENGUINV]

**61*121**30# 

**61*101**30#

**61*321**30#  all do not work

[adib_rahmang]

Hey @PENGUINV,

The first code that you tried is the correct one. Have you tried setting it to a different time?