I am trying to implement 'hold call' functionality into my system. I have looked at this question and some twilio docs, and recommended way to do this is to dequeue the call, which will automatically play the hold music, and then retrieve from queue when hold is complete(un-hold).
This works perfectly fine, when I have an incoming call from a mobile, to my twilio client, and I can dequeue the call, and all works fine.
However when I do it with the outgoing call from the twilio client to the mobile, if I update the call to issue dequeue instruction, I get to hear the hold music on the client side itself, and the phone gets disconnected. I suppose this is because I have set the client leg of the call on hold. So the question is how do I get the call sid for the mobile leg of the call.
I have tried querying CallResource by ParentCallId, but that does not return anything in the case of outgoing calls. Any ideas?
Call is initiated on the client with:
var params = {
To: num
};
console.log('Calling ' + num + '...');
Twilio.Device.connect(params);
The connect API callback uses a simple Dial verb.
Client code for saving callid on connect:
Twilio.Device.connect(function (conn) {
if (conn._direction === 'OUTGOING') {
$scope.outgoing_call_sid = conn.parameters.CallSid;
$scope.number = conn.message.To;
} else {
$scope.incoming_call_sid = conn.parameters.CallSid;
$scope.number = conn.parameters.From;
}
$scope.message = 'In call with ' + $scope.number;
$scope.status = 'InCall';
});
Client code on hold button click:
$scope.hold = function () {
$scope.status = 'Hold';
$scope.message = 'Putting on hold...';
if ($scope.outgoing_call_sid) {
return $http.get(serviceBase + 'api/twilio/hold?callid=' + $scope.outgoing_call_sid);
}
};
Server side Hold API call:
public IHttpActionResult Hold(string callid) { /
//callid = GetLegCallId(callid); //Try to replace with child call
CallResource.Update(new UpdateCallOptions(callid) { Url = ConfigurationManager.AppSettings["ngrokUrl"] + "/api/twilio/enqueue", Method = HttpMethod.Get });
return Ok();
}
Code for getting any child calls:
public string GetLegCallId(string callId)
{
var calls = CallResource.Read(new ReadCallOptions() { ParentCallSid = callId });
if (calls.GetEnumerator().Current != null)
return calls.GetEnumerator().Current.Sid;
}
