Five Hardware Considerations
Five hardware considerations 1. Be sure your PBX is HD-aware. If it's not already, this is a simple software update to a VOIP PBX. What happens is that "G.722" (by far the most popular wideband VOIP codec today) is added to the list of allowed codecs. Most major PBX vendors are already shipping (or are soon planning to) G.722 compatibility.2. Be sure that any new VOIP phone purchases are rated for HD Voice. Networks are rapidly moving to HD Voice and phones have a typical service life of five to 10 years-which means that a narrowband phone bought today will be obsolete long before it has been fully depreciated. A narrowband-only phone will also be the poorest-sounding participant in a group HD conference. Take advantage of the HD Voice and wideband phones available from multiple vendors today.3. Get HD Voice quality-not just "G.722-compatible." For the same reasons that feeding an HD video signal to an old television set may give a picture but it will be the same old blurry video, HD Voice needs more than just a G.722 codec. HD Voice means HD microphones, a great speaker subsystem, a thoughtful acoustic design and tight integration among software, hardware and mechanics. And if the phone has a built-in speakerphone, it's even more critical. Just claiming HD Voice compatibility doesn't mean a phone will deliver full HD Voice performance so compare and listen for yourself. 4. Confirm that HD Voice phones can be future-upgraded with new codecs. Today's G.722 (7kHz, 64Kbps) will soon be augmented with G.722.1 for full 7kHz HD Voice quality at less than half the data rate (7kHz, 16-32Kbps), so be sure that new phones have room to grow. 5. Convert those speakerphones. The advantages of HD Voice are most overwhelming in group conferences where distractions and lousy room acoustics-a lot of people, a lot of noise, people who don't speak up and a wide variety of accents-are an epidemic. That open-air setting really spotlights the HD difference, even more than on a handset. Switch from conventional narrowband speakerphones to HD Voice over HD connections and users will be astounded.