voipcall.inc undefined property warnings

Need to check if the variable is initialized:

Notice: Undefined property: stdClass::$direction in VoipCall->_voipcall_save() (line 644 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$current_channel in VoipCall->_voipcall_save() (line 648 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$current_channel in VoipCall->_voipcall_save() (line 648 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$call_id in VoipCall->_voipcall_save() (line 693 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$status in VoipCall->_voipcall_save() (line 718 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$answered_by in VoipCall->_voipcall_save() (line 723 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$source in VoipCall->_voipcall_save() (line 733 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$direction in VoipCall->_voipcall_save() (line 738 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$start_time in VoipCall->_voipcall_save() (line 743 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$call_channel in VoipCall->_voipcall_save() (line 769 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$current_channel in VoipCall->_voipcall_save() (line 774 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$call_network in VoipCall->_voipcall_save() (line 779 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined property: stdClass::$current_network in VoipCall->_voipcall_save() (line 784 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\modules\voipcall\voipcall.inc).
Notice: Undefined variable: options in VoipLogServer->dial() (line 36 of C:\wamp\www\drupal-7.0\sites\all\modules\voipdrupal\includes\voiplogserver.inc).