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STUN’d Into Silence

I’ve been traveling a lot lately so the phones around my home office have been idle. Even so, I was a little surprised to find that my snom m3 was not making or receiving calls this morning. Well, it was and it wasn’t. I could dial out and the call appeared to be placed, but I never heard any audio. Once clear of today’s VUC call with Dan Behringer, and lunch with my wife, I was able to investigate this further and get the matter resolved.

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Wideband Voice And Free World Dialup

For the past few weeks I’ve been hunting for a soft phone with specific wideband voice capabilities. I’ve found a couple but there arises complications.

Wideband-capable hard phones usually support G.722, G.722.1 or G.722.2 (aka AMR-WB) codecs. There are other codecs out there that support wideband voice coding. Speex is the one most often cited. However, Speex support in hardware is extremely limited. So Speex implemented in a soft phone is not going to help me evaluate interoperability with hard phones.

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