Tipsy Collab

What The F-Heck Are Route and Record-Route SIP Headers??

Everyone is familiar with the basic SIP headers like CSeq and Call-ID (I’m not gonna mention From and To :)). Some might even know Remote-Party-ID or Contact headers. What I’ve noticed throughout the years though, is that not many are familiar with the Record-Route and Route SIP headers. Not sure why as they’re pretty useful […]

It’s Crazy People Still Make This BFCP Mistake

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| Video

Spoiler alert – BFCP is not the second video channel as many people refer to it. I thought it’s obvious but… then I thought again.I’ve decided to write this article after speaking to a senior engineer (seemingly) who was rather confused seeing a second video m line in SDP, not to mention all the BFCP […]

What Everyone Ought to Know about SIP Video

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| Video

One day, I was trying to figure out what maximum resolution was supported by the far end in a SIP video call. Yes, you can check the statistics on the VC unit showing the codec negotiated, resolution, frame rate, etc. This is what is currently being used though. How do you know it’s not due […]