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That is incorrect. CDMA carriers can roam with each other if the freqs match up. I roamed on au-KDDI's CDMA signal in Japan for a short while. I was also able to manually direct my Storm to SoftBank's GSM. If the phone can register with the network, and the carriers have roaming agreements, there is no inherent advantage other than the number of MSAs that use GSM versus CDMA on a global scale.
This is through the use of HSPDA, and on different frequencies. GSM/EDGE can do no more than CDMA can, which may be texting while on a call - simply a sub-channel on the voice freq. But for voice and data at the same time, without separate voice and data freqs, it's a no-go.
Actually CDMA can and does. For some reason, and I don't know why, CDMA Blackberries do not. I don't think this is a network issue as much as a hardware/software issue with RIM. There are plenty of CDMA phones that can send multi-page SMS (which sorta defeats the whole idea of "Short Msg Svc" but I digress)...
I'm not sure what you're referring to here, back in the day, we referred to it as "shrinkage". This can be ameliorated with power management. It does not however affect overall capacity.
That's not even an argument. It's a standard. Arguably, it is also a vulnerability in GSM.
And as I said, "with due respect". The issue is that GSM, being a time-divided and frequency-divided standard, is less expensive to roll out, but wastes spectrum. As for simultaneous voice/data, the only reason why "GSM" can support it is if you are in a HSPA service area, operating on a different frequency than the voice channel. In the US, that mean major metro areas only. GSM is notorious for the buzzing interference that GSM Blackberries cause around audio/video equipment. CDMA evolution can support simultaneous voice and data, but the lead carrier in the US, Verizon, is opting to rollout its LTE on the C-Block it just acquired in the FCC auction. At 700MHz, it will have better building penetration. The existing 3G network will continue to provide its more natural coverage in urban and varied terrain environments.
GSM, having more ubiquitous coverage worldwide, makes a standard to contend with. The CDMA carriers in the US all have multi-mode/multi-band phones (dumb and smart alike) to handle that. Ubiquity, does not a superior standard make, however.
We didn't even get to soft-handoffs
None-the-less, neither standard is going the way of the Do-do.12-05-09 01:53 PM - you really blew me away. You just offered the absolute best answer anyone can ever recieve here on crackberry. the way you answered that was great. you didn't miss anything. great jobThat is incorrect. CDMA carriers can roam with each other if the freqs match up. I roamed on au-KDDI's CDMA signal in Japan for a short while. I was also able to manually direct my Storm to SoftBank's GSM. If the phone can register with the network, and the carriers have roaming agreements, there is no inherent advantage other than the number of MSAs that use GSM versus CDMA on a global scale.
This is through the use of HSPDA, and on different frequencies. GSM/EDGE can do no more than CDMA can, which may be texting while on a call - simply a sub-channel on the voice freq. But for voice and data at the same time, without separate voice and data freqs, it's a no-go.
Actually CDMA can and does. For some reason, and I don't know why, CDMA Blackberries do not. I don't think this is a network issue as much as a hardware/software issue with RIM. There are plenty of CDMA phones that can send multi-page SMS (which sorta defeats the whole idea of "Short Msg Svc" but I digress)...
I'm not sure what you're referring to here, back in the day, we referred to it as "shrinkage". This can be ameliorated with power management. It does not however affect overall capacity.
That's not even an argument. It's a standard. Arguably, it is also a vulnerability in GSM.
And as I said, "with due respect". The issue is that GSM, being a time-divided and frequency-divided standard, is less expensive to roll out, but wastes spectrum. As for simultaneous voice/data, the only reason why "GSM" can support it is if you are in a HSPA service area, operating on a different frequency than the voice channel. In the US, that mean major metro areas only. GSM is notorious for the buzzing interference that GSM Blackberries cause around audio/video equipment. CDMA evolution can support simultaneous voice and data, but the lead carrier in the US, Verizon, is opting to rollout its LTE on the C-Block it just acquired in the FCC auction. At 700MHz, it will have better building penetration. The existing 3G network will continue to provide its more natural coverage in urban and varied terrain environments.
GSM, having more ubiquitous coverage worldwide, makes a standard to contend with. The CDMA carriers in the US all have multi-mode/multi-band phones (dumb and smart alike) to handle that. Ubiquity, does not a superior standard make, however.
We didn't even get to soft-handoffs None-the-less, neither standard is going the way of the Do-do.
but i have to say that on Verizon CDMA Blackberrys, SMS is NOT split up. you need an app for that such as "Textender" or "Beyond 160". but one answer im truly trying to get is why can a dumbphone send 7 pages of texts, 160 characters each, to another verizon user as ONE text message, but blackberrys cannot within the Verizon Wireless network. we are limited to 160 characters in and out of our carrier12-05-09 05:31 PM
