Is HD VOIP a New Trick or Old Trick?

Iristel is the first to bring HD VOIP to Canada.

Whoa…I don’t think I can handle this. We just recently enduring a long and arduous process of researching and purchasing our first “big” screen TV with…heaven help me…HD-high definition. You see in Canada it’s important to actually see the puck when the Canucks are playing. Apparently this is impossible on a 21″ tube TV with a pink stripe across the top of the screen. (Who knew?)

Maybe fellow bloggers can help me out here, but is HD VOIP something that consumers should consider when choosing a VOIP service, or is it more marketing lingo to work through? As I understand it, HD, high definition, or wideband VOIP refers to voice sampling at 16 kHz rather than at the measley 8 kHz supported by the PSTN and just about everyone else. If you capture voice with a wider spectrum of frequencies, the quality is better. They say it’s like comparing the quality of AM and FM radio. (See this article from voip-info.org).

Sounds good to me, but the catch is you have to have HD end to end in a VOIP call. It’s no good having 16 kHz at one end and 8 kHz at the other. In fact, 16 kHz downsampled to 8 kHz (which happens if you are calling a landline) may sound worse than 8 kHz from start to finish.

So I guess you can make the argument that HD or wideband VOIP is wasted on the masses when most calls travel partially over the PSTN or use VOIP networks using an 8 kHz voice capture process.