Dave Satterlee (@DaveATvocal)

Communications Software Engineer - Systems programming, SIP, RTP, VoIP, Modems, Fax, DSP, Embedded

I believe you misunderstood.  He is buffering 5 seconds before playout, which will indeed produce 5 seconds of "perfect" sound, and then sometime later, depending...
If you are trying to solve the problem generally, then you want generalized call progress detection.  Not every ringback will be the same, and there are also...

Re: MCUs with hardware ids.

Reply posted 7 years ago (03/16/2017)
Many of the Blackfin DSPs have a unique ID.  Mot exactly a pure MCU, but the differences aren't what they used to be.

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