How to setup voicemail?
You can have the caller transfer to voicemail after a specified amount of time without answer. In order to setup voicemail, pick your phone and dial *92*<Ring Time>*1334.
For example: to transfer an unanswered call to voicemail after 10 seconds, dial *92*10*1334.
another example, to transfer an unanswered call to voicemail after 5 seconds, dial *92*05*1334.
Disable voicemail by dialing #92