Profile Status change by *31 not working after v20 upgrade

[south14]

We have just upgraded to V20 from V18 hosted and where users were previously able to change their status on their Yealink handsets to unavailable by pressing *31 and available using *30, this is no longer working and they get a message saying that the function is unavailable.
The setting in Dial Codes for this is still the default *3 so not really sure what the problem is.
Any idea?
TIA

 

[south14]

Ok worked out the issue, so posting it here in case anyone else finds the same problem. On version 18 I had changed the dial code for pickup a call to * instead of the default *20 I think. Worked fine, but it seems that version 20 finds this invalid and therefore stops all the other dial codes from working. Doesn't show an error until you try to change one of the other dial codes at which time it flags up that the * on it's own is invalid.