Basics of YAP:
The YAP protocol allows you to open you own connection to ViaNett, where you can send and receive SMS by use simple commands. Each command is always acknowledged by an ack command.

All commands has this syntax:
command: param1=value1 param2=value2 param3=value3 paramN=valueN
command_ack: param1=value1

Example:
login_op: refno=1 username=myUserName password=myPassword
login_op_ack: ack_code=200 refno=1