diff --git a/src/lynq/lib/liblynq-call/lynq_call.cpp b/src/lynq/lib/liblynq-call/lynq_call.cpp
index e7d0585..174038f 100755
--- a/src/lynq/lib/liblynq-call/lynq_call.cpp
+++ b/src/lynq/lib/liblynq-call/lynq_call.cpp
@@ -986,7 +986,7 @@
     }
     return lynq_set_common_request(8003,1,"%d",volume);//LYNQ_REQUEST_SET_DTMF_VOLUME
 }
-int lynq_set_speech_volume(int volume)//mixer_set_volume
+int lynq_set_speech_volume(const int volume)//mixer_set_volume
 {
     if(!judge_volume(LYNQ_E_VOLUMN_SET_SPEECH,volume))
     {
@@ -998,13 +998,14 @@
 {
     return lynq_get_common_request(8010,volumn);//LYNQ_REQUEST_GET_SPEECH_VOLUME
 } 
-int lynq_incall_record_start(char* file_path)
+int lynq_incall_record_start(const char* file_path)
 {
-	return lynq_set_common_request(8011,2,"%s\0%s","1",file_path); //LYNQ_REQUEST_RECORD
+	return lynq_set_common_request(8011,2,"%s %s","1",file_path); //LYNQ_REQUEST_RECORD
 }
 int lynq_incall_record_stop()
 {
-    return lynq_set_common_request(8011,2,"%s\0%s","0",""); //LYNQ_REQUEST_RECORD
+    const char* unused_file="just_ocuupy_paramter_postion";
+    return lynq_set_common_request(8011,2,"%s %s","0",unused_file); //LYNQ_REQUEST_RECORD
 }
 /*audio end*/
 #if 0