I ask this question as this this could be a possibility going forward for Telecom, especially since they will need a UMTS equivilent to 900MHZ UMTS on Vodafone by the end of 2010.
I see the AT&T (formally cingular) run 850 GSM/ UMTS & 1900 GSM / UMTS, i would imagine the 850mhz networks are in rural areas with 1900 in the cities, surely these are on the same site and can co exist like 900MHZ GSM / UMTS?
yeah thought so, it seems to be common overseas and as you state, Vodafone are doing it at 900MHZ.
I guess the 850GSM move was to get a GSM network and use the AMPS band and leave them open for UMTS at same freq when needed. Now its apparent that it will be needed in the next year if they expect to compete with Vodafone.
Now EVDO is a dead duck in NZ it is needed.
In my opinion though EVDO is a brilliant rural broadband solution, have been selling a ton of solutions with wilson direct connect boosters and yagi on REV A cards and i have customers now 50km away from EVDO site getting 1600kbps down and 350kbps up average speeds, thats hot but its a shame it will be gone in 4 years with no planned rev C upgrade path.
Then again UMTS @ 850 with HSPA etc on every site would offer these same clients similar or faster speeds and maybe they wouldnt need the booster. But then again the booster will give them faster speeds with the yag.