calls can meanwhile arrive on SIP2. What I meant by the API shortcut alternative. You understood

that correctly too. A shortcut could say essentially call John via work line and send John 077 to your

Twilio application. Twilio could then call your iPhone, you answer, Twilio calls John, bridge you

together. Twilio's API explicitly supports creating outbound calls and can automatically send digits

after connection as well. But that means every outgoing call starts by your phone ringing, which

is a little backwards. It would also make your iPhone's call history less intuitive. Your dis-a-comma

approach preserves the natural behavior. You initiate an outgoing cellular call, Twilio answers,

DTMF automatically goes through, destination rings. I like that better. One improvement I'd make, don't

rely on a fixed six second delay if we don't have to. We can make the Twilio

end answer almost immediately and immediately listen.