Of all the things discussed at Pulver's HDComms event in May the one thing that spurred everyone to agreement was the idea that wideband telephony needs much greater public visibility. To that end Mr Pulver proposed the formation of a…
What with the gathering storm that is wideband telephony there’s a lot of rumbling about codecs going on at the moment. Such discussions usually include at least a couple of open source proponents wondering why Speex is not more widespread. It’s a very good question.
Speex most commonly shows up in soft phones. That’s nice, but soft phones have limited appeal. Most people prefer hardware of some kind. That’s where Speex implementations are few and far between. This is kind of the opposite of the situation that I found with G.722. In that case I found that hardware support was good and growing, but support for it in soft phones was lacking.
Earlier today Michael White at E4 tweeted that he had just received his shipment of Gigaset SL78H handsets. The SL78H is the high-end handset that Gigaset is offering as an optional addition to the A580IP and S675IP basic SIP/DECT systems.…
Thilo Salmon, CEO of SIPGate, was our guest on the VUC call on June 4th. Until then I had only passing awareness of the company, primarily as a result of speaking with some associates in the UK and Germany who have used the service for years. I signed up for an account just to give it a whirl. Further, I was more than a little intrigued when Mr Salmon said that the service has some support for wideband calling using G.722.
Over at Nerd Vittles that Asterisk Guru Ward Mundy has posted a great how-to implementing ISN lookups with his popular PBX-In-A-Flash Asterisk distributions. It's a great overview of ISN and ITADs, including Freenum.org. ISNs are a novel approach to bridging…
| This article was originally posted in June 2009, before Gizmo5 was purchased by Google. |
Last week I suggested Skype as an easy way to get started with wideband VoIP. Michael Robertson’s Gizmo5 is a great alternative to Skype.
Whereas Skype is a relatively closed network using proprietary protocols and codecs, Gizmo5 is based on SIP, a global open standard. A Gizmo5 account can be used from the Gizmo5 soft phone client or any SIP compliant device. That means that the myriad of SIP phones (hardware & software varieties) can be used with Gizmo5.