Hotlink Settings - Dialing Codes

I was looking for dialing codes to deactivate VoiceMail box for my Hotlink, and i found a list of codes here.
Just want to share.
Hope this helps some of you who are also looking for these codes.

Talk & SMS Plan
To change from Talk Plan to SMS Plan – *108*4#
To change from SMS Plan to Talk Plan – *108*1#
or call to change the SMS Plan & Talk Plan – 1300 820 120

GPRS Setting
To activate GPRS – *133#
To deacitvate GPRS – #133#

Missed Call Notification
To switch on the service – *147*1#
To switch off the service – *147*0#

Call Me Back service
*126*012XXXXXXX#

Voicemail Setting
To activate Voicemail – *109#
To deactivate Voicemail – #109#

Maxis 3G
to activate maxis 3g – *136#
to deactivate maxis 3g – #136#

Maxis PTT
1 day use – *110*1#
1 month use (30days) – *110*30#

Check Registration Status (prepaid)
type REG and send to 22555

Check Credit Balance
*122#

Easy Menu
*100#