Instead of writing, you say it. Instead of reading, you listen. VoiceSMS brings mobile phone   messaging to everyone. you are never too young, you are never too old, you can always   VociceSMS. Only with hello.
  You will always get more with hello. The first in Cambodia to bring you innovative and enhanced   services to improve the way you connect to life around you.

To send VoiceSMS : Dial 8867

+ Recipient's number + send + Record message + # and follow      voice prompt.
     (e.g. 8867016810000 + send + Record message + Press# and follow voice prompt).
     (Maximum message length is 30 seconds).
     (Only 4c per VoiceSMS).

To listen to VoiceSMS : Dial 8868

and follow voice prompt. ( New message retrieval is free )

To listen to old VoiceSMS : Dial 8869

and follow voice prompt. ( Retrieval of old message is      2c/min )