In CW Interrogation service class is not sent.

Naveen Kalla · Jean-Baptiste Queru · commit c4c4c98c5ca6 · 2010-08-11T09:44:04.000-07:00
As per 3GPP TS 24.083, section 1.6 UE doesn't need to send service class
parameter in call waiting interrogation  to network. Some networks return error
if service class is sent. So setting service class to SERVICE_CLASS_NONE.

Change-Id: I396963d568573b88795ad2cf1844eb2e047b459e
diff --git a/telephony/java/com/android/internal/telephony/gsm/GSMPhone.java b/telephony/java/com/android/internal/telephony/gsm/GSMPhone.java
@@ -972,7 +972,9 @@ public void setOutgoingCallerIdDisplay(int commandInterfaceCLIRMode,
     }
 
     public void getCallWaiting(Message onComplete) {
-        mCM.queryCallWaiting(CommandsInterface.SERVICE_CLASS_VOICE, onComplete);
+        //As per 3GPP TS 24.083, section 1.6 UE doesn't need to send service
+        //class parameter in call waiting interrogation  to network
+        mCM.queryCallWaiting(CommandsInterface.SERVICE_CLASS_NONE, onComplete);
     }
 
     public void setCallWaiting(boolean enable, Message onComplete) {

Original file line number	Diff line number	Diff line change
`@@ -972,7 +972,9 @@ public void setOutgoingCallerIdDisplay(int commandInterfaceCLIRMode,`
`972`	`972`	`}`
`973`	`973`
`974`	`974`	`public void getCallWaiting(Message onComplete) {`
`975`		`- mCM.queryCallWaiting(CommandsInterface.SERVICE_CLASS_VOICE, onComplete);`
	`975`	`+ //As per 3GPP TS 24.083, section 1.6 UE doesn't need to send service`
	`976`	`+ //class parameter in call waiting interrogation to network`
	`977`	`+ mCM.queryCallWaiting(CommandsInterface.SERVICE_CLASS_NONE, onComplete);`
`976`	`978`	`}`
`977`	`979`
`978`	`980`	`public void setCallWaiting(boolean enable, Message onComplete) {`