In the earliest days of consumer VoIP services the venerable Cisco ATA-186 was the way to connect a traditional analog telephone to one of those new-fangled Vonage accounts and save some loot. It didn’t take too long before our strategy evolved from an analog terminal adapter (ATA) plus a an analog phone or a cordless phone, to SIP desk phones and SIP/DECT cordless phones.
As such, it’s been years since an ATA held any interest at all…until last week. Last week I received a couple of notices about a new pair of ATA’s from Grandstream, the HT802 and HT812.
This is admittedly a deep dive into a niche topic. It stems from work done for ZipDX, but is more technical than most audiences can stand. Nonetheless, those of you who frequent these waters may find it interesting.
Why Do This?
One of the more fascinating aspects of my work at ZipDX involves the interpreters engaged in the use of our multilingual conference capability. These people, who are located all over the globe, are simply fascinating people. They have incredible skills with languages, and finely tuned sensitivity to the nuance of cross-cultural communication. It’s positively inspirational to hear them at work, and very gratifying to support them in their work.
Ever curious, I thought it worth looking into what kind of HD Voice-capable devices they would be offering. The list of twenty handsets seems quite comprehensive. That bodes well for customers someday actually getting to experience HDVoice.
Just as significantly, the HD Voice capable handsets was easy to identify. The company lists “HD Voice” as a key feature that can be used to search through the entirety of their handset offering. Thus new customers can easily reference this feature while in the process of selecting their new handset.
I’ve long had a fascination with spatial audio processing. This was in part why Voxeet caught my attention when the service initially launched. It was over a year before we were able to have them appear on VUC #471 on January 10th.
From that session you may recall that Voxeet offers a binaural conference service. Participants join a conference using a PC smart phone application. They use a stereo headset allowing the client application to provide placement of the individual participants within a controlled sound stage.
Voxeet is interesting. However, it’s not exactly clear what aspect of the service is most compelling. At point of launch they used the Speex audio codec, which allows wideband audio (aka HDVoice.)
In the recent v2 release their PC client has been moved to a WebRTC foundation, leveraging Opus. I’ve done a quick analysis of their updated online demo. Newly fitted with American voices where there were once French accents, it presents 16 KHz usable audio path, suggesting a 32 KHz sample rate. It certainly sounds very good.
The review includes a good deal of technical detail about its capabilities. The fact that it supports wideband audio and A2DP are key features in my realm.
Plantronics own page for the product indicates that it’s been discontinued. After 18 months that completely to be expected. If you need a BT headset, it’s hard to see how you could go wrong with this M1100 for a paltry $20.