Test telephone numbers for Twilio

Question

Does Twilio have any "test" telephone numbers that I can use to emulate outbound calls? For example, I'd like to be able to test my app to the fullest, getting back asynchronous responses (like I would normally expect to) for calls that are busy, answering machines, out-of-order, invalid numbers etc.

There are a few numbers you can use for SMS messages - but these all return simple, immediate responses, and not the kind of asynchronous ones you'd expect through voice calls that are being handled through TwilXML.

How am I supposed to test all this functionality without making calls to tons of "live" numbers?

Answer 1

I was looking for the same thing, because I need to test external calls to my internal IPs, and because I don't want the phone ringing all the time! While I find it disappointing that Twilio doesn't provide this functionality, Devin's response seems reasonable.

I was wondering if someone else had created the set of HTTP interactions in a more comprehensive manner, and found this:

https://github.com/minddog/twilio-emulator

Trying it out now. Perhaps in the future Twilio could add basic callback, not necessarily a full set of Twiml cases that would have to be passed in for each interaction.