RottenBrains

… brains …

SIP and Proprietary Extensions

Over at ITBusiness, Vawn Himmelsbach scratches the surface of how proprietary extensions are damaging SIP. It’s very fluffy, but I think it’s good that this is finally getting some press. Awareness might actually breed changes in behavior, so that people try to do things in a more standard fashion.

2 Responses to “SIP and Proprietary Extensions”

  1. fluffy says:

    Interesting that he does not seem to quote a single example of one of these problems.

  2. Adam Roach says:

    Interesting that he does not seem to quote a single example of one of these problems.

    Right, but they abound. For example, I’ve seen clients that (quite reasonably) tear down a call if they start getting media marked with a codec they didn’t negotiate. I’ve also seen poorly designed SIP/PSTN gateways that don’t negotitate comfort noise, but send it anyway. The results of attempting to interoperate between these two implementations are somewhat less than satisfactory.

Leave a Reply


seven + = 12


Skysa App Bar