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646 posts

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  Reply # 45390 4-Sep-2006 21:20
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Further to this question, and back to what i started this forum to dicuss

Can anybody confirm if an 800mhz CDMA 2000 network can be run in conjunction with a n 850mhz wcdma?

Isn't this what Telstra doing, well atleast until they close CDMA 2000






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Reply # 45392 4-Sep-2006 21:27
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The closure of CDMA has been put on hold. But yes that is what Telstra were doing so it must be possible...

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Master Geek
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  Reply # 45493 5-Sep-2006 21:03
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Telecom have management rights for both AMPS bands of radio spectrum (20MHz).

The CDMA network uses the A-band, and when the 025 network is closed, the B-Band will be availble for other uses - I guess UMTS 850MHz is a possibility. However I imagine TNZ are watching the handset market closely to see what happens there first.

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Reply # 45496 5-Sep-2006 21:14
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I can't see Telecoms choice being made on handset availability....

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  Reply # 45506 5-Sep-2006 21:30
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If handset availability was their prime concern they would never have built CDMA2000/1X...







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  Reply # 45510 5-Sep-2006 21:34
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tonyhughes: If handset availability was their prime concern they would never have built CDMA2000/1X...


I don't know is that comment is necessarily 100% accurate. You could have quite reasonably expected that most networks around the world who were running AMPS/DAMPS networks would have upgraded to CDMA2000 since it was the logical upgrade path so there should have been a lot more people using CDMA that what there is now.

I don't think anybody predicted large numbers of carriers dumping their existing infrastructure completely and rolling out GSM to replace it.


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Master Geek
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Reply # 45511 5-Sep-2006 21:34
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At least they didn't pick EDGE! ;)

When it comes to the strategic direction of their mobile network... I suspect the TNZ board have a magic 8-ball they consult.

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  Reply # 45514 5-Sep-2006 21:38
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Loftus: When it comes to the strategic direction of their mobile network... I suspect the TNZ board have a magic 8-ball they consult.


Obviously you think CDMA is not a good choice. You might want to give reasons for that. CDMA/EVDO is the way to go. It is in many respects a better technology than WCDMA.

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Master Geek
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  Reply # 45519 5-Sep-2006 22:07
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Obviously you think CDMA is not a good choice. You might want to give reasons for that. CDMA/EVDO is the way to go. It is in many respects a better technology than WCDMA.


Sorry Brad, you've mis-interpreted my comments. I also believe CDMA has huge technical advantages, and as the opposition has finally moved to (W-)CDMA they are only now catching up.

Perhaps TNZ will surprise us all and follow Sprint's lead to a WiMax network in the near future?

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  Reply # 45522 5-Sep-2006 22:09
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Loftus: At least they didn't pick EDGE! ;)



When it comes to the strategic direction of their mobile network... I suspect the TNZ board have a magic 8-ball they consult.


Telecom have not had a lot of options in the past. They lost their TACS spectrum they could have used for GSM and until the late 90's only owned both AMPS bands. Rolling out a 900MHz GSM network was never a realistic option for them as the spectrum was not available and when the hard decision had to be made in regards to the future on their AMPS/DAMPS network they had the choice of going with CDMA or potentially rolling out a nationwide GSM 1800 network (or maybe even GSM 1900 since they owned 1900MHz spectrum which they purchased because CDMA phones were dual band 800/1900).

The GSM option would have probably taken them until late 2002 at the earliest to roll out a network with reasonable coverage. In that time you could argue that Telecom would have probably had no customers left with their AMPS/DAMPS network which was already hemorrhaging.

CDMA was the best option for Telecom and putting facts on the table it's hard to disagree with that choice.


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