# Mobile phone WeChat call device(Linux Direct link)

Required plug-in 2.4.0 Version, Linux SDK 0x00097 Start support

If you want to get various events during a call, you can use the plug-in's onVoipEvent Interface.

# 1. Mobile phone WeChat terminal to initiate a call

Before initiating a call, the user generally needs to select the device and the type of call in the Mini Program (audio/Video).

To initiate a call, the developer needs and invokes the plug-in's callDevice Interface acquisition RoomId, and then jump to the plugin's Initiate Call page.

const wmpfVoip = requirePlugin('wmpf-voip' ).default

try {
  const { roomId } = await wmpfVoip.callDevice({
    roomType: 'video', // Room type. voice: Audio Roomvideo: Video Room
    sn: 'equipment SN',
    modelId: 'equipment modelId',
    nickName: "WeChat user name displayed on the device end,"
    deviceName: My learning machine,
  })

  if (/* Currently not in plugin page */) {
    wx.redirectTo({
      url: wmpfVoip.CALL_PAGE_PATH,
    })
  }
} catch (e) {
  console.error('callDevice failed:', e)
  wx.showToast({
    title: Call failure,
    icon: 'error',
  })
}

# 2. Push call alerts

After initiating a call in WeChat, the developer should use its own message channel to roomId And so on equipment terminal joins the room to need the parameter passing to the equipment.

# 3. The device receives the call

The device end, after receiving the call reminder, first uses the wx_voip_session_new Interface Creation Session, and then pass the wx_voip_listener_Join Answer. Other interfaces used are similar to device calling cell phones. Session Once created, you can call wx_voip_session_hangup Interface to end the call. Details can be found Mini Program audio and video calls SDK (Linux)》。

# 4. Device Reject Call

After the device side receives the call reminder, it can call the wx_voip_listener_hangup(Only available in Session Call before creation) ends the call and realizes busy or reject. Details can be found Mini Program audio and video calls SDK (Linux)》。