Ruben’s Take On The Citel C-4110 IAX/SIP Phone
There's just way too much interesting gear out there for me to try all of it. That's at least part of the reason why I was happy to read Ruben's review of the Citel C-4100 IP phone. Back in May…
Review Delayed: Dreamwave SIP-D28P
I wanted to be working on reviewing the Dreamwave SIP-D28p by now, but that effort has been delayed due to a firmware issue. The phone is powered-up and running. I’ve been able to use it a bit, exploring its firmware, web GUI, etc. It shows some promise. There are some nice features in the device.
However, I came to a screeching halt when I found that the phone doesn’t provide sidetone into the handset. This stopped me dead in my tracks. The lack of sidetone makes using any phone very unnatural. Thus I’ve not been able to put it on my desk and actually use it as my primary phone. That’s the process that forces me to gain enough experience with a device to write about it sensibly.
GIPS Comments On G.722
Not long ago Dr. Jan Linden, V.P. Of Engineering at GIPS, wrote a really good blog post called G.722 Revisited. In it he considers the trend toward the use of G.722 in the rollout of new wideband telephony projects.
Dr. Linden collected a nice stable of facts in making his points regarding the use of G.722. It’s simply old and less than optimal for use over IP networks. It’s not as bandwidth efficient as many of the new codecs, resulting is lower call quality for a given data-rate. He points to a 2007 study of ITU standard wideband codecs that is quite clear that G.722 is back-of-the-pack from a pure performance perspective.
The post is a great collection of information and he is absolutely correct in making all of his points. But I think that there may be more to it than the argument he lays out, strong though it may be.
This Just In: Gigaset Giveaway at HDComms Next Week
The Second of Pulver's HDComms events is next Tuesday, Sept 15th in NYC. I just found out that all attendees to the event will be given a free Gigaset DECT/CATiq HD capable cordless phone and a coupon to download MailVision's…
Dialing By SIP URI In Asterisk
Barrett Lyon is an interesting guy. He's the CTO & Co-founder of BitGravity, a company specializing in streaming media solutions for the web. Long ago I stumbled upon his blog which was then a very simple site. What caught my…
Codecs, Wideband & Stereo: A Conversation At AMOOCON
Back in the spring of this year VUC founder Randy Resnick made the trek to Germany to attend AMOOCON, a conference for Asterisk Users. AMOOCON started out in 2007 known as AsteriskTAG which literally translated means “Asterisk Day.”
While at AMOOCON Randy made a point of recording some of the presentations. These recordings can be found on the VoIP Users Conference site. Various sessions were recorded by the conference organizers and are available on the AMOOCON site. There they also have quite a lot of video of the formal sessions.