Voicemail calling back 20 seconds later - twilio

Question

I'm trying to set up voicemail for a Twilio # (Not Twilio Cell)... And it works, for the most part, except I get called back 20 seconds later with nothing there (Step 5 Below). I think my issues are in TWIML 1/2 from testing, but I don't know.
I'll call in to my Twilo # from my cell.
I hit the reject on my cell (Even though my time out is 1, it doesn't give up.).
Leave the message
Hang up || press button to end
[~20 seconds after step 4] Get blank call back
[10-15 secs after step 5] Get my text / email as expected
Am I doing something wrong in TWIML 2?
or
Is using my cell for orig/term causing problems?
Incoming:
TWIML 1:
<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Dial action="https://-->TWIML 2"
timeout="1"
callerId="{{To}}"
>
<Number>##CELL##</Number>
</Dial>
</Response>
TWIML 2:
<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Say>
Please leave a message
</Say>
<Record action="https://TWIML 3"
method="POST"
maxLength="120"
playBeep="false"
trim="do-not-trim"
transcribe="true"
transcribeCallback="https://FUNCTION 1"
/>
<Say>I did not receive a recording.</Say>
</Response>
TWIML 3
<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Say>Bi</Say>
</Response>
FUNCTION 1
exports.handler = function(context, event, callback) {
var client = context.getTwilioClient();
const mailgun = require('mailgun-js')({apiKey: context.MG_KEY, domain:context.MG_DOMAIN});
var async = require('async');
var sendSMS = function(callback){
let dataSMS = {
to: '##CELL##',
from: event.To,
body: 'Voicemail from:\n ' + event.From + '\n\nText:\n' + event.TranscriptionText + '\n\n---MSG Recording---\n' + event.RecordingUrl
};
client.messages.create(dataSMS).then(function(response){
console.log('N [T1]: ' + response.status);
return callback(null, response);
}).catch(function(err){
console.log('T2: ' + err);
});
};
var sendEmail = function(callback){
let dataMG = {
to: '##TO##',
from: '##FROM##',
subject: 'Voicemail: ' + event.From,
text: event.TranscriptionText + '\n\n--- MSG Recording --->\n' + event.RecordingUrl
};
console.log('-------- Sending Mail (Mailgun API)---->' + dataMG.to);
mailgun.messages().send(dataMG, function (error, body) {
console.log('N [MB] Mailgun Body :' + body);
return callback(null, body);
});
};
var waitTime = function(callback){
setTimeout(function() {
return callback(200);
}, 1000);
};
var asyncTasks = [sendSMS, sendEmail, waitTime];
async.parallel(asyncTasks, function(err, result){
console.log('--------------------------DONE--------------------------' + result[0] + result[1]);
callback(null, 200);
});
};
Resolved:
So a couple days later and it is working as expected, without being phoned back ~20 seconds later. I don't think I changed anything, but who knows; now I'm having trouble forcing the unexpected behavior to occur :)
Below is an example of how to set up a voicemail system that will transcribe your message to a MMS including a link to the original voice message. This also includes an email copy, if you had a mailgun account set up.
There is an extra fee associated with using the transcription service, and you will have to delete the recordings eventually after you no longer want access to the recording.
If you are to try this out, when clean the code for you situation, the timeout variable in Twiml 1 is how many seconds it will ring for. Function 1 requires async, but you could write it without when tailoring for you situation.