Category: Session Initiation Protocol
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VoIP Recording – Troubleshooting – SIPRec Integrations
In the following entries we will implement a basic SIP recording solution using Oracle Interactive Recording (ISR), but before go in deep to the ISR implementation lets take a few minutes to describe a SIPRec environment. When using SIPRec, we need to first define three key elements in communication: Session Recording Server (SRS) – Passive…
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Session Initiation Protocol – Dual-tone multi-frequency (DTMF)
Session Initiation Protocol support devices and applications to exchange user input DMTF information end-to-end over IP networks. There are 3 ways to support DTMF information communication: DTMF digit waveforms are encoded inline with voice packets. This method only works with uncompressed audio codecs like G.711. Compressed audio codecs like G.729 and G.723 are incompatible with…
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Session Initiation Protocol – Troubleshooting – Transcoding
Having devices that speak differently (SIP/H323, analog/IP, etc) is a common situation. In this entry we will have a short definition to understand transcoding (used in the next entries where will test it using the Oracle SBC). Coding is the process of turning the sound wave into digital data, and decoding is converting it back.…