DECT or CDMA ?
Dmitry Kuzmenko
Could anybody, please, explain which cordless phone technology is better:
DECT (TDMA) or CDMA? Which is more promising, more popular?
Many thanks in advance.
Dmitry
-------------------==== Posted via Deja News ====-----------------------
http://www.dejanews.com/ Search, Read, Post to Usenet
Adrian C Smith
Dmitry Kuzmenko <dmi...@alex-ua.com> wrote in article
<882809696...@dejanews.com>...
> Could anybody, please, explain which cordless phone technology is better:
> DECT (TDMA) or CDMA? Which is more promising, more popular?
part of the answer depends upon where you live. In Europe DECT is the only
system in widespread use - you can't go to the stores and buy anything else
(other than old analogue). DECT handsets and base stations retail from
around $125.00.
cybersoftsystems.com
CDMA is much much better. Look at www.qualcomm.com
Dmitry Kuzmenko <dmi...@alex-ua.com> wrote:
>Could anybody, please, explain which cordless phone technology is better:
>DECT (TDMA) or CDMA? Which is more promising, more popular?
>Many thanks in advance.
>Dmitry
>-------------------==== Posted via Deja News ====-----------------------
> http://www.dejanews.com/ Search, Read, Post to Usenet
Nashvillenet.com (http://www.nashvillenet.com) is a complete guide to
Nashville. This site includes music, dining, arts, entertainment,
sports, jobs, travel, Real Estate, visitor, tourist information and
Fan Fairs. Nashvillenet.com is the winner of several awards and
contests for online excellence. We are a City Connection, Mindspring
and America Online Digital city member.
Adrian C Smith
cybersoftsystems.com <pr...@cybersoftsystems.com> wrote in article
<688vou$h...@camel20.mindspring.com>...
> CDMA is much much better. Look at www.qualcomm.com
so was Betamax!
Fred R. Goldstein
In article <01bd14ec$d5042d20$caf482c1@rona>, a...@opensystems.co.uk says...
True. But Sony killed Betamax with their own hand. They got greedy,
refusing to license it to other manufacturers, preferring a monopoly supply
on Beta VCRs. So JVC warped the details enough to miss the Beta patents,
created VHS, and allowed everyone to play. Eventually VHS quality became
reasonably competitive, if not exactly equal, to Beta.
Qualcomm, on the other hand, is energetic about licensing its CDMA
technology. They sort of manufacture some of their own phones (some jointly
with Sony, adding irony to this analogy), but would really like the whole
world to license CDMA from them. They're playing a JVC-style winning
strategy with a superior technology.
But I'm not sure how this compares with DECT. Since DECT is a short-range
cordless-phone technology (I think also low-tier PCS?) and CDMA is a
longer-range cellular or high-tier PCS, they address different markets. Thus
it's unfair to ask whether a banana is better than a beefsteak. I won't
slice steak into my breakfast cereal, but bananas don't fetch $13.99 for
eight ounces at a restaurant.
--
Fred R. Goldstein k1io fgoldstein"at"bbn.com
GTE Internetworking - BBN Technologies, Cambridge MA USA +1 617 873 3850
Opinions are mine alone; sharing requires permission.
ask...@ibm.net
In <Ae8q.23$ro5.3...@cam-news-reader1.bbnplanet.com>, fgold...@bbn.NO$LUNCHMEAT.com (Fred R. Goldstein) writes:
>In article <01bd14ec$d5042d20$caf482c1@rona>, a...@opensystems.co.uk says...
>>
>>cybersoftsystems.com <pr...@cybersoftsystems.com> wrote in article
>><688vou$h...@camel20.mindspring.com>...
>>> CDMA is much much better. Look at www.qualcomm.com
>>
>>so was Betamax!
>
>True. But Sony killed Betamax with their own hand. They got greedy,
>refusing to license it to other manufacturers, preferring a monopoly supply
>Qualcomm, on the other hand, is energetic about licensing its CDMA
>technology. They sort of manufacture some of their own phones (some jointly
>But I'm not sure how this compares with DECT. Since DECT is a short-range
>cordless-phone technology (I think also low-tier PCS?) and CDMA is a
>longer-range cellular or high-tier PCS, they address different markets. Thus
>it's unfair to ask whether a banana is better than a beefsteak. I won't
>slice steak into my breakfast cereal, but bananas don't fetch $13.99 for
>eight ounces at a restaurant.
>--
>Fred R. Goldstein k1io fgoldstein"at"bbn.com
>GTE Internetworking - BBN Technologies, Cambridge MA USA +1 617 873 3850
>Opinions are mine alone; sharing requires permission.
The most-common DECT scheme for bandwidth re-use is probably closer to CDMA
than it is to, for example, GSM. BUT - range aside - the general applications
are not the same. DECT is ordinarily applied to single-point to single-point
(residential phone and base station) or single-point to multiple-point
(small to medium PBX with handset that can roam an office suite or even the
whole building).
Once you get into larger areas to span, such as a larger business or "campus"
then multi-point to multi-point i.e. some form of cellular, usually becomes
necessary, if only because the *handsets* must be kept to reasonably low
power levels.
DECT's advantage over PCS, for example, is simplicity, as applications
served with a single base station do not require the cell-to-cell handoff.
In many countries this also means that DECT does not require a license,
while PCS and other cellular DO.
Bill Hacker
Martin Melnick
> CDMA is much much better. Look at www.qualcomm.com
>
>
> Dmitry Kuzmenko <dmi...@alex-ua.com> wrote:
>
> >Could anybody, please, explain which cordless phone technology is
better:
> >DECT (TDMA) or CDMA? Which is more promising, more popular?
>
> >
>
>
Did you expect Qualcomm the inventor of wireless CDMA to conclude that TDMA
is better!!!!
@addressinautoreply-remove Rudy Torres
> Martin Melnick <Martin....@trw.com> wrote to the world...
No. But would you also expect the proponents of GSM to say that TDMA is
better than CDMA? Both mobile standards have their pros and cons, but it
is becoming clear that CDMA does have some technological benefits over
TDMA. IMHO, I agree with the recent Yankee Group study on the growth of
CDMA (45% of the US market by 2004), and I suspect a similar competitive
move into Asia and Latin America in the near future over GSM.
Cheers,
- Rudy
--
[Please remove "anti-spam" measures from the address prior to sending
e-mail via auto-reply]
"Sigs? Sigs? I don' need no stinking Sigs!"
Disclaimer: My keystrokes, my employer's keyboard.