Twilio 出站呼叫 - 将更多人添加到现有呼叫

Question

我正在尝试创建一个 Web 应用程序，其中：

1. 我通过 twilio 从浏览器应用程序向电话号码发出呼出电话。我将 Twilio Client(js) v 1.10.1 用于浏览器应用程序。 后端 webhook 使用 Twilio 的 Dial and Number 动词用 Java 编写。我能够使用 twilio 的可编程语音来实现它。

   伪代码如下

   前端代码

   let device = require('twilio-client').Device;
   let outboundCall = '';
   const twilioInit = () => {
   // twilio client initialization logic goes here
   
   }
   
   // on phone icon click i am calling the below method
   const makeOutboundCall = () => {
           outboundCall = device.connect({        
               To: TO_NUMBER // The first to number
           });
   }
   

   后端代码 - 服务器端（webhook）

   @RequestMapping(value="/callCustomers", produces= "text/xml")
   public String callByBrowserToMobile(@RequestParam String ApplicationSid, @RequestParam String ApiVersion, 
                                       @RequestParam String Called, @RequestParam String Caller, 
                                       @RequestParam String CallStatus, @RequestParam String To,
                                       @RequestParam String From, @RequestParam String CallSid,
                                       @RequestParam String Direction, @RequestParam String AccountSid) {
   
       Number number = new Number.Builder(To).build();
       Dial dial = new Dial.Builder().answerOnBridge(true).number(number).callerId(myTwilioNumber).build();
       VoiceResponse response = new VoiceResponse.Builder().dial(dial).build();
       logger.info(response.toXml());              
       return response.toXml();    
   }
   

2. 其次，一旦拨出电话接通，我想将更多人添加到正在进行的通话中。

如何实现第二个要求？

已编辑： 我尝试使用以下代码进行电话会议：

@RequestMapping(value = "/callMobile", produces = "text/xml")
public String callByBrowserToMobile(@RequestParam String ApplicationSid, @RequestParam String ApiVersion,
        @RequestParam String Called, @RequestParam String Caller, @RequestParam String CallStatus,
        @RequestParam String To, @RequestParam String From, @RequestParam String CallSid,
        @RequestParam String Direction, @RequestParam String AccountSid) {

    LOG.info("Call by browser to mobile");
    
    String voiceCallBackUri = new StringBuilder(
            env.getProperty("twilio.exposed.uri").concat("/conferenceCallBack")).toString();
    String joinConferenceUri = new StringBuilder(
            env.getProperty("twilio.exposed.uri").concat("/joinConference")).toString();
    
    String fromNumber = "+xxxxxxxxx35"; // Bought Twilio Number
    Call call = Call.creator(
                new com.twilio.type.PhoneNumber("+"+To),
                new com.twilio.type.PhoneNumber(fromNumber),
                URI.create(joinConferenceUri))
            .setMethod(HttpMethod.GET)
            .setStatusCallback(URI.create(voiceCallBackUri))
            .setStatusCallbackMethod(HttpMethod.POST)
        .create();
    
    
    Conference.Builder conferenceBuilder = new Conference.Builder("My Conference");
    
    Dial dial = new Dial.Builder().conference(conferenceBuilder.build()).build();
    VoiceResponse twiml = new VoiceResponse.Builder().dial(dial).build();       
    
    return twiml.toXml();
}

@RequestMapping("/joinConference")
public String joinConference() {
    
    LOG.info("joinConference");
    
    Conference.Builder conferenceBuilder = new Conference.Builder("My Conference");
    
    Dial dial = new Dial.Builder().conference(conferenceBuilder.build()).build();
    VoiceResponse twiml = new VoiceResponse.Builder().dial(dial).build();       
    
    return twiml.toXml();
}

@RequestMapping("/conferenceCallBack")
public void conferenceCallBack(@RequestParam String Called, @RequestParam String ToState,
        @RequestParam String CallerCountry, @RequestParam String Timestamp, @RequestParam String Direction,
        @RequestParam String CallbackSource, @RequestParam String SipResponseCode, @RequestParam String CallerState,
        @RequestParam String ToZip, @RequestParam String SequenceNumber, @RequestParam String To,
        @RequestParam String CallSid, @RequestParam String ToCountry, @RequestParam String CallerZip,
        @RequestParam String ApiVersion, @RequestParam String CalledZip,@RequestParam String CallStatus,
        @RequestParam String CalledCity, @RequestParam String Duration, @RequestParam String From, 
        @RequestParam String CallDuration, @RequestParam String AccountSid, @RequestParam String CalledCountry, 
        @RequestParam String CallerCity, @RequestParam String Caller, @RequestParam String FromCountry, 
        @RequestParam String ToCity, @RequestParam String FromCity, @RequestParam String CalledState, 
        @RequestParam String FromZip, @RequestParam String FromState) {
    LOG.info("conferenceCallBack");
}

使用上面的代码进行会议，呼叫者（浏览器应用程序）会听到等待电话会议的音乐，并且被呼叫者接听电话，但是当被选中时，只会听到会议名称并且被呼叫者的呼叫断开。请指导查找问题。

Answer 1

这里是 Twilio 开发者宣传员。

您没有将 /joinConference 路由作为 text/xml 提供服务，因此 Twilio 将其读取为 text/plain 并将其视为 <Say>。

我认为您需要将produces = 'text/xml' 添加到RequestMapping，如下所示：

@RequestMapping("/joinConference", produces = "text/xml")

让我知道这是否有帮助。

Answer 2

您可以使用代理会议。 这是示例代码和其工作原理的高级图片 https://www.twilio.com/blog/multi-party-calls-voip-gsm-programmable-voice