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Revision A Passes First Exam

Article Comments  18  

Oct 28, 2005, 12:53 PM   by (staff)

Qualcomm today announced they have made successful end to end test calls on EV-DO Rev. A prototype equipment. EV-Do Rev. A is capable of upload speeds 10 times faster than Rev. 0 and speeds up downloads slightly as well. Both Sprint and Verizon issued statements with Qualcomm revealing a bit about how they intend to use the improved network. Verizon, seeks to leverage their landline business by concentrating on Rev. A's support for IP multimedia subsystems (IMS) and Voice Over IP (VOIP). Sprintwhich has previously hinted they will use Rev. A for a next generation Push To Talk (PTT) additionally announced intention to launch VOIP. CDMA operators are seeking VOIP solutions with Rev. A because EV-DO spectrum cannot be used to make voice calls.

more info at Qualcomm »
more info at Qualcomm »




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This forum is closed.


Oct 31, 2005, 2:19 AM

EV-DO spectrum can not be used for calls???

As quoted in the post:

"CDMA operators are seeking VOIP solutions with Rev. A because EV-DO spectrum cannot be used to make voice calls."

My understanding is that the EV-DO carrier channels are deployed either in the Cellular 850 or PCS 1900 bands here in the US. As far as I know there are no licensing restrictions about not deploying voice carriers in the same spectrum.

I assume what the poster meant was that a given EV-DO carrier channel can't be simultaniously used for voice.

Why would carriers care all that much about deploying VoIP in EV-DO when they can just turn up CDMA2000 carrier channels instead? Does VoIP over EV-DO allow for a higher call capacity than CDMA2000?

Is EV-DV going to be the next step in the CDMA iter...
Qualcomm suspended the development of EV-DV because no carriers were interested in licensing the technology, or in other words, there is not enough demand to justify developing the technology past forms of EV-DO at the current time.

I think that, i...
ev-dv is no longer going to come to the market place...

that is why qualcomm devloped ev-do rev A to have voip...

Oct 28, 2005, 2:14 PM

Judicious thinking

Seeing that their wireless business is coming back around to bite off chunks of their landline business, Sprint and Verizon are laying out their VoIP plans. But all this wireless, VoIP, UMA business is starting to put me off. Having managed to live through the worst hurricane in Broward County (that's Florida, folks) history, I can tell you with utter lucidity that none of that crap works after a disaster like this. What does work? Good old American landlines. And even those were compromised here and there. But it was a lot more reliable than my Verizon service, which allowed me to do jack squat (surprise!). Don't throw out that good old fashioned, cord connected, beige AT&T phone. They're worth their weight in gold.
The real circuit switched network went bye-bye a long time ago. TDM as we know it is gone.

Nearly all voice networks have a packet switched core -- even "good old american landlines". Even first generation CDMA voice systems behave more li...
Actually, it depends on the situation. Having lived through hurricanes Charlie, Frances, and Jeanne in Central Florida, we found the Verizon wirelines were down, while mobile phones would still work. Because the landline was down for so long, we con...
Understand that hurricanes affect a very small precentage of the country, maybe 5-10% (and that's being generous)
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