Twilio demo call from browser to phone

I want to make a demo of Browser to Phone.
Followed this Twilio link.
http://www.twilio.com/docs/quickstart/php/client/outgoing-calls
but "Successfully established call" Message says,but no ringup in phone
Twilio demo call from browser to phone
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I want to make a demo of Browser to Phone.
Followed this Twilio link.
http://www.twilio.com/docs/quickstart/php/client/outgoing-calls
but "Successfully established call" Message says,but no ringup in phone