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Video calling is IP based with EV-DO Rel a isn't it?
It's a shame, because video calling on UMTS requires more than a simply handset software upgrade if any developments are made on the standard. UMTS is actually only used for signalling, with video being actually transmitted on a 64Kbps CSD channel.
As you say having video on a different layer makes so much more sense...
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REV A will certainly be the shiz, fast on up and down link and with more expansion in the pipeline of the EVDO coverage it will offer the best all round mobile broadband and 3g voice capability for some time yet.
Voda will have to do better than Smoke and mirrors to offer a similar service and HSPDA on current releases is not going to offer the up/down link speeds and quality that EVDO does and will!
Looking forward to this being rolled this year!
antoniosk:
Applications like voice and video are _really_ sensitive on IP networks - packets need to arrive in sequence and at the right time, or you experience jitter, leading to poor quality voice/video. Voice needs 100kbps each way using todays codecs, with latency of about 100ms to be usable.
So, when the bearer is up to it then application can follow.....
Slightly OT but isn't it ironic that Telecom will potentially have a far better mobile broadband offering than what is available over their copper network? Any VoIP applications over ADSL are just a joke at present with ADSL's poor performance and interleaving!
mjsit&t:
Wireless compared to cable is cheaper from the install for starters. 10 square km of Fibre in city versus a cellular sites to cover the same distance, wireless will win hands down because of the scale and propagation from a small number of sites, versus 100km of fibre layed in that same area.
paradoxsm: CDMA is cheap as chips to install and maintain and so streamlined, Small cabinets.. That's why I am a real fan of it..
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