问sip.js远程媒体没有声音，本地的可以传输过去？

<script setup>
import { reactive } from 'vue'
import { UserAgent, Inviter, SessionState } from 'sip.js'
const transportOptions = {
 server: "ws://192.168.0.9:5066",
 traceSip: true,
 keepAliveInterval: 600// SIP Websocket 服务器的 Websocket URL
}
const uri = UserAgent.makeURI("sip:1002@192.168.0.9:5060")
const userAgentOptions = {
 authorizationPassword: '123456', // 分机密码
 authorizationUsername: '1002', // 分机号
 transportOptions,
 uri,
}

let inviter = reactive()
const but1 = () => {
 registerer.register() // 注册,向服务器进行身份验证并接收消息
 // userAgent defined elsewhere
 userAgent.start().then(() => {
 const target = UserAgent.makeURI("sip:1001@192.168.0.9:5060")
 inviter = new Inviter(userAgent, target, {
 sessionDescriptionHandlerOptions: {
 constraints: { audio: true, video: false }
      }
    })
 inviter.invite();
 inviter.stateChange.addListener((state) => {
 switch (state) {
 case SessionState.Initial: console.log(' 初始状态') // 最初
 break;
 case SessionState.Establishing:
 let remoteVideo = document.getElementById('remoteVideo');
 let localVideo = document.getElementById('localVideo');
 var pc = inviter.sessionDescriptionHandler.peerConnection;
 var remoteStream;
 console.log(pc);
 console.log('成功=======================================');
 if (pc.getReceivers) {
 remoteStream = new window.MediaStream();
 pc.getReceivers().forEach((receiver) => {
 // console.log(receiver)
 var track = receiver.track;
 console.log(track);
 if (track & track.kind === "video") {
 remoteStream.addTrack(track);
              }
            });
          } else {
 remoteStream = pc.getRemoteStreams()[0];
          }
 remoteVideo.srcObject = remoteStream;
 console.log(remoteVideo.srcObject);
 console.log("1-------------------------------------------");
 var localStream_1;
 if (pc.getSenders) {
 localStream_1 = new window.MediaStream();
 pc.getSenders().forEach((sender) => {
 var track = sender.track;
 console.log(track);
 if (track && track.kind === "video") {
 localStream_1.addTrack(track);
              }
            });
          } else {
 localStream_1 = pc.getLocalStreams()[0];
          }
 localVideo.srcObject = localStream_1;
 console.log(localVideo.srcObject);
 break;
 case SessionState.Established: console.log('呼叫已建立') // 确立
 break;
 case SessionState.Terminating: console.log('正在结束呼叫') // 终止
 case SessionState.Terminated: console.log('呼叫已结束') // 结束
 break;
 default:
 throw console.log(`Unknown session state.`)
      }
    })
  })
}
const but11 = () => {
 let sessionall = inviter
 if (!sessionall) {
  } else if (sessionall.startTime) { // Connected
 sessionall.bye();
  } else if (sessionall.reject) { // Incoming
 sessionall.reject();
  } else if (sessionall.cancel) { // Outbound
 sessionall.cancel();
  }
}
</script>