Revision A Passes First Exam
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.
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EV-DO spectrum can not be used for calls???
"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...
I think that, i...
that is why qualcomm devloped ev-do rev A to have voip...
Nearly all voice networks have a packet switched core -- even "good old american landlines". Even first generation CDMA voice systems behave more li...