如何在Android上使用pjsip發送dtmf？

Question

我正在嘗試在voip呼叫期間發送dtmf。 爲了做到這一點我使用

mCall.dialDtmf(String.valueOf(dtmf)); 

MCALL它的調用方式PJSIP。 當這個函數被調用我趕上例外：

04-25 16:03:57.867 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err: java.lang.Exception: Title:  pjsua_call_dial_dtmf(id, &pj_digits) 
04-25 16:03:57.867 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err: Code:  70013 
04-25 16:03:57.867 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err: Description: Invalid operation (PJ_EINVALIDOP) 
04-25 16:03:57.867 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err: Location: ../src/pjsua2/call.cpp:551 
04-25 16:03:57.879 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at org.pjsip.pjsua2.pjsua2JNI.Call_dialDtmf(Native Method) 
04-25 16:03:57.879 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at org.pjsip.pjsua2.Call.dialDtmf(Call.java:143) 
04-25 16:03:57.879 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at com.kaymera.kphoneapp.voipEngine.PJCall.dialDtmf(PJCall.java:115) 
04-25 16:03:57.879 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at com.kaymera.kphoneapp.voipEngine.calls.VoipCall.sendDTMF(VoipCall.java:149) 
04-25 16:03:57.879 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at kphoneapp.kymera.kvoip.myapplication.MainActivity.generateDtmf(MainActivity.java:223) 
04-25 16:03:57.880 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at kphoneapp.kymera.kvoip.myapplication.MainActivity$$ViewBinder$11.doClick(MainActivity$$ViewBinder.java:110) 
04-25 16:03:57.880 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at butterknife.internal.DebouncingOnClickListener.onClick(DebouncingOnClickListener.java:22) 
04-25 16:03:57.880 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at android.view.View.performClick(View.java:4764) 
04-25 16:03:57.880 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at android.view.View$PerformClick.run(View.java:19844) 
04-25 16:03:57.880 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at android.os.Handler.handleCallback(Handler.java:739) 
04-25 16:03:57.880 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at android.os.Handler.dispatchMessage(Handler.java:95) 
04-25 16:03:57.881 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at android.os.Looper.loop(Looper.java:135) 
04-25 16:03:57.881 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at android.app.ActivityThread.main(ActivityThread.java:5349) 
04-25 16:03:57.881 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at java.lang.reflect.Method.invoke(Native Method) 
04-25 16:03:57.881 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at java.lang.reflect.Method.invoke(Method.java:372) 
04-25 16:03:57.881 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908) 
04-25 16:03:57.881 19670-19670/kphoneapp.kymera.kvoip.myapplication W/System.err:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703) 

我怎樣才能解決呢？

Answer 1

我有類似的問題，事情是服務器使用不同的DTMF方法。

dialDtmf方法使用RFC 2833，而我的服務器使用SIP INFO調用DTMF。

這是對我的服務器工作的代碼：我發現這個解決方案也

CallSendRequestParam prm = new CallSendRequestParam(); 
prm.setMethod("INFO"); 
SipTxOption txo = new SipTxOption(); 
txo.setContentType(" application/dtmf-relay"); 
txo.setMsgBody("Signal=" + String.valueOf(code) + "\n" + "Duration=160"); 
prm.setTxOption(txo); 
call.sendRequest(prm);