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Tanumay Das
Tanumay Das

Reputation: 19

How to leave Voice mail using Twilio?

I'am trying to send recorded messages to phone numbers using twilio & salesforce. The problem i am facing that some times the call is going to Voice mail and the message is not getting recorded as the voice mail recording starts after a certain time. How can twilio manage to monitor that time and play the message after the voice mail starts recording.

Now i know that the voice mail recording system uses a beep before it starts recording. Can i use that DTMF tone to instruct twilio to start playing the recorded message.

Upvotes: 2

Views: 4878

Answers (1)

philnash
philnash

Reputation: 73027

Twilio developer evangelist here.

Twilio is able to do some, experimental, checking for answering machines such that it will only start playing after it hears a beep. You can see how to do this in the documentation here. Basically, you need to pass an ifMachine parameter of "Continue". You will then get an "AnsweredBy" parameter in calls to your TwiML so that you can decide what to do. If you do continue, Twilio will wait for the beep.

Let me know if that helps!

Update

The ifMachine parameter has been deprecated and replaced with the new Twilio Answering Machine Detection.

Now you can pass a parameter called MachineDetection with the argument Enable or DetectMessageEnd. Enable tries to give you an answer as soon as possible, passing the result to the TwiML webhook within the AnsweredBy parameter. DetectMessageEnd will call the webhook once the voicemail message has finished playing.

Upvotes: 1

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