Quote:
Originally Posted by tichi
it turns out, AGPS can use both to connect to an IP?
it makes things more clear then..
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Sure can. It's all digital dude!
The big difference is that one is "designed for" voice and the other for data. Voice channel transmissions are measured in tens of Kbps and Data channels are measured in Mbps. Another big difference is that Data channels are designed for error-correction and dormant periods.... Voice channels are not. If you think about it, it makes perfect sense. If that file your downloading has a packet error it would be a disaster and you want it fast. But who cares if my voice sounds a little different than it does in person or how quickly it is delivered to your earpiece so long as you can "hear me now"?
So if my theory that Sprint is using the data channel for AGPS is correct and Verizon is not then it would certainly help explain why Sprint users are locking their GPS programs in a few seconds and others.. (Verizon) are taking tens of seconds or minutes.
BTW, I'm not expert either. This is just kinda' along the lines of what I do for a living and it's interesting to try and reverse engineer.