How to avoid high redirecting costs from phone provider?
mahmud: Twilio does that and inbound calls can be as cheap as 3 cents/minute.If you choose to use them, try to fit your voice message into under a minute. Whenever people call your number, twilio will play your "thanks for calling, we have your number, we will call you back" message. The Twilio API can send missed calls to you in email. You can also have the option to request the person dial a different contact number + extension. Also try to do the debugging and implementation using their free trial account and make sure you don't have any script that initiates and outside call based on some computational event (this screwed me, big time.)