Thread: 3g?
View Single Post
Old 11-12-2006, 08:21 PM   #46 (permalink)
dc/dc
Spam Reporter
 
dc/dc's Avatar
 
Join Date: Oct 2005
Location: IAD
Model: 6230
Carrier: Voicestream
Posts: 14,524
Post Thanks: 214
Thanked 341 Times in 307 Posts
Default

Quote:
Originally Posted by infernox
So that I have my facts correct...let me summarize and pls correct me if I am wrong. See graph below. It's taken from a Cingular presentation. This is for U.S. based carriers.

- UMTS / HSDPA devices or networks will allow you to conduct voice AND data simultaneously. Currently in the states, that's a GSM technology carried by T-Mo and Cingular. The speed is up to 3.6 mbps. The latency is 100-200 ms

- EVDO Rev. A is coming out from Sprint and promises faster speed than Rev. 0 but however won't support true voice AND data transfer simultaneously with playing around with VOiP technology. It's a CMDA technology. The speed is up to 2.4 mbps and latency is 250-350 ms.

http://static.flickr.com/114/295864903_e0d2a56a50_o.jpg
I don't believe that diagram is comparing to Rev. A.
__________________
I h8 txtspk.
Offline