人机交互流程v1.0,fix

src/core/voip/bot.py

@@ -178,7 +178,7 @@ class MyCall(pj.Call):
 
         if call_info.state == pj.PJSIP_INV_STATE_CONFIRMED:
             # 当呼叫状态为已确认（即接通）
-            self.dbot_say_hello()
+            self.bot_say_hello()
 
         if call_info.state == pj.PJSIP_INV_STATE_DISCONNECTED:
             print("通话结束")