Revision A Passes First Exam
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...
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"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...
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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, if for example Verizon would assign 10 mHz to EV-DO, that if the voice channels were full and the EV-DO was not being utilized, that those 10 mHz would be almost empty because they can't carry voice, even though the voice channels may be overloaded. I'm not sure if this is correct, so please step in.
I think that, if for example Verizon would assign 10 mHz to EV-DO, that if the voice channels were full and the EV-DO was not being utilized, that those 10 mHz would be almost empty because they can't carry voice, even though the voice channels may be overloaded. I'm not sure if this is correct, so please step in.
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not sure if you know this, but qualcomm released ev-do rev A which is voip..
http://www.qualcomm.com/media/pdf/QCOM_1xEV-DO.pdf »
"Alternatively, operators can upgrade to EV-DO Rev. A, a hardware and software enhancement that
encompasses all of the EV-DO Rel. 0 improvements plus features that increase capacities and data
rates, and expand multicast and QoS capabilities. As a result, EV-DO Rev. A enables more users and more bandwidth-intensive applications. It also enables
entirely new categories of applications, particularly those that are latency sensitive or provide rich user
experiences through simultaneous voice and data delivery, such as instant messaging with multimedia
content, high capacity video telephony, VoIP and low-del...
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http://www.qualcomm.com/media/pdf/QCOM_1xEV-DO.pdf »
"Alternatively, operators can upgrade to EV-DO Rev. A, a hardware and software enhancement that
encompasses all of the EV-DO Rel. 0 improvements plus features that increase capacities and data
rates, and expand multicast and QoS capabilities. As a result, EV-DO Rev. A enables more users and more bandwidth-intensive applications. It also enables
entirely new categories of applications, particularly those that are latency sensitive or provide rich user
experiences through simultaneous voice and data delivery, such as instant messaging with multimedia
content, high capacity video telephony, VoIP and low-del...
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...
The thing is, Verizon would never allocate 10 mHz to EV-DO if there was not the demand to drive it. They can light it up one carrier channel at a time (1.25 mhz each).
If they needed voice capacity they would just light up more voice carriers instead of EV-DO carriers.
I am still wondering what the drive to do VoIP over EV-DO is. I must assume it is efficiency?
If they needed voice capacity they would just light up more voice carriers instead of EV-DO carriers.
I am still wondering what the drive to do VoIP over EV-DO is. I must assume it is efficiency?
...
ev-dv is no longer going to come to the market place...
that is why qualcomm devloped ev-do rev A to have voip...
that is why qualcomm devloped ev-do rev A to have voip...
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This forum is closed.
