Prowid course material: https://kurslar.prowid.com/en/index.php?id=lesson&m=3616
Voice over IP: Codecs, RTP, DTMF and Quality · Problems and solutions
Case study: IVR fails to recognize digits — in-band DTMF over low-bitrate G.729 codec
🔒 This is the beginning of the lesson. The full lesson is available with a subscription.
