Twilio Application Connect for Programmable Voice is now Generally Available.  We have added an <Application> noun to the existing TwiML <Dial> verb, which allows you to place Voice calls from one TwiML Application to another.  This allows you to:

• Connect Voice calls across Twilio accounts, without using a Twilio number or SIP Proxy in-Between.  
• Separate complex application flows into smaller, more modular applications.  

For more information on Twilio Application Connect, please check out the Usage and TwiML documentation