Twilio / TwiML on iOS - Using Enqueue and Dial - twilio

Basically, I am creating an iOS app that will Dial a phone number in my office when certain button is tapped. This is working fine, but now I want to have a music file played while waiting for the phone to be picked up.
Knowing that Dial cannot use a music file to replace the default wait tone, I was guided to use Enqueue's waitURL. However, I am lost on how to Dequeue so to start the Dial. This is how the whole TwiML looks right now, and it plays the whole song without dialing in:
<Response>
<Enqueue waitUrl="waitMusic.xml">office</Enqueue>
<Dial callerId="+12345678910">
<Number >999-999-9999</Number>
</Dial>
</Response>
waitMusic.xml is simply:
<Response>
<play>slowrock.mp3</play>
</Response>
Is it not possible to use this TwiML?

Twilio developer evangelist here.
You can't use <Dial> and <Enqueue> like that together. Here's what you need to do.
When the user taps the button have them make the call and return just the <Enqueue> in the TwiML response.
<Response>
<Enqueue waitUrl="waitMusic.xml">office</Enqueue>
</Response>
And in that response also kick off a call to the number you want to dial using the REST API. When that call is answered, Twilio will request some TwiML, you should return a <Dial> with a nested <Queue> which will pop the top caller off of the queue and connect them to the person on the phone.
<Response>
<Dial>
<Queue>office</Queue>
</Dial>
</Response>
You may need to do a bit more work to ensure you don't end up with anyone stuck in the queue, but that should get you started.

Related

play music to caller while simultaneous dial to multiple destinations

We've got a basic twiml set up that sends a call to multiple destinations, it looks something like this:
<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Play loop="10">https://xxx.xxx.xxx/assets/MoH.wav</Play>
<Dial>
<Number>+1800XXXXXXX</Number>
<Number>+1912XXXXXXX</Number>
</Dial>
</Response>
The problem with this is that the <Dial> doesn't happen until the <Play> finishes. We want to play music to the caller while waiting for the call to be answered by one of the destination parties.
We've tried <Enqueue> to play the music but it still doesn't dial simultaneously.
Twilio developer evangelist here.
You are right that TwiML expects to finish one verb before it starts the next, so in your example code it will play the <Play> all the way through before starting to dial the numbers.
If you want to play music to the caller while the dial happens, then you will need to use <Enqueue> to put them into a holding pattern while you dial the other numbers. However, you will not be able to use TwiML to dial the numbers, instead you will need to make the outbound calls using the REST API.
Once one of the outbound calls connects, you can then connect it with the original call by <Dial>ling in to the <Queue> that you placed the caller in. You will also want to end the other calls using the REST API.

TwiML Trying to create Hold music during call forwarding

I'm trying to create an customized Music for Call forwarding.
When someone calling the it's redirecting to Enqueue named by "support".
<Response>
<Enqueue waitUrl="waitMusic.xml"></Enqueue>
</Response>
waitMusic.xml (Playing the audio)
<Response>
<Play>http://audio_file.mp3</Play>
</Response>
I don't know how to continue, I tried all out of things, and nothing works.
Please help!
You have 2 legs, the user leg and the agent leg.
When the user calls to Twilio's number, Twilio will do a request to your server which should return (same TwiML as you are using, but with a queue name):
<Response>
<Enqueue waitUrl="waitMusic.xml">support</Enqueue>
</Response>
This puts the user in hold playing the music from waitMusic.xml if there are no agents available.
But you also need the logic for the agent. The agent will call to a Twilio phone, and in this case you'll return a different TwiML:
<Response>
<Dial>
<Queue url="agentWaitMusic.xml">support</Queue>
</Dial>
</Response>
This is a "dial queue" (docs) that automatically dequeues any user that is on the the queue "support" and connects them together. If there are no users in the queue, the agent will be put on hold, playing the music from "agentWaitMusic.xml".
It's important to use the same queue name (in this case "support") for both, the "enqueue" and the "dial queue" actions.

Recording multiple user answers in Twilio call

I am building an Interactive Voice Assistant using Twilio. My goal is to record parts of the conversation, process the recorded audio and
This is the answer to the /voice webhook (the one will receive Twilio's call)
<Response>
<Play>./welcome</Play>
<Record maxLength="10" action="/processing" recordingStatusCallback="/getRecording"></Record>
</Response>
Processing the audio and providing an answer may take a long time, so I added a Pause at the end of /processing:
<Response>
<Play>./ok</Play>
<Pause length="10"></Pause>
</Response>
This is the answer when finished with /getRecording
<Response>
<Play>./answer</Play>
<Record maxLength="10" action="/processing" recordingStatusCallback="/getRecording "></Record>
</Response>
/welcome, /ok and /answer lead to corresponding audio files.
So I was able to execute all steps, I can check in my logs that /getRecording is actually executed to the end and the twiml sent back again, but the /answer after /getRecording is never executed by Twilio (and the call just ends).
Do you have any guidance for it? Does Twilio accept multiple recordings on the same call?
Note: For some reason, if instead of using the 'recordingStatusCallback' I use /getrecording as 'action' it does work... but then we wouldn't be sure the recording we are using is really generated, right?
Thank you for your help!
Twilio developer evangelist here.
Your /getRecording endpoint is called, however that is an asynchronous webhook in the context of the call. Returning TwiML to the recordingStatusCallback will not affect the current call.
Instead, you should use the REST API to modify the call by redirecting it to the next TwiML you want to execute based on the response to the recording file.
Hopefully the recording does take less than the 10 second pause that you are using, but you may want to add a loop into your /processing endpoint so that the call won't hang up on your caller. You can do this by redirecting the caller back to the start again:
<Response>
<Play>./ok</Play>
<Pause length="10"></Pause>
<Redirect>./processing</Redirect>
</Response>
Then, when you get the recording callback you redirect your caller out of this loop.
Let me know if that helps at all.

Twilio voicemail - Get a call back if caller hangs up before recording starts

Question
Implementing voicemail in Twilio. How can I get a call back if the caller hangs up before the recording starts?
More info
After the incoming call's <dial> times out, the call back URL responds with this:
<Response>
<Say>Please leave a message.</Say>
<Record playBeep="true" action="http://..." />
</Response>
The issue I seem to be having is that if the caller hangs up while the <Say> verb is executing, the <Record> verb never executes and thus the application never receives a call back.
Is it possible to receive a call back under this circumstance? If so, how do I make that happen?
Twilio evangelist here.
One idea might be to separate this TwiML response into two separate responses and track what the last step in your workflow you sent to the call was. First send the Say:
<Response>
<Say>Please leave a message.</Say>
<Redirect>http://example.com/record</Redirect>
</Response>
Then redirect to the Record:
<Response>
<Record playBeep="true" action="http://..." />
</Response>
To get notified when the call ends, set the StatusCallback attribute on your phone number. When Twilio makes the request to the StatusCallback URL, you can check to see what the last step that you sent to the user was and take the appropriate action.
Hope that helps.

Can I 'un-bridge' a Twilio call in active state and then reconnect my 2 legs in the same call later?

As an APP, I want to connect 2 users on a call, 'park' users to an IVR mid-call (active), play prompts and collect DTMF on both sides ("press 1 to continue, 2 to end the call") and reconnect on the SAME call if both selected "1". Thank you.
From Matt's comments above:
App makes outbound call
Users answer and respond to <Gather> TwiML
Connect both users to same <Conference>
<Response>
<Dial>
<Conference>Room 1234</Conference>
</Dial>
</Response>

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