circuit switched data switch off

Hi,
Does anyone know of the forecast date for the switch off of circuit
switch data (ie WAP etc) and when everyone will have to start using
GPRS?
Mark

"Mark" <marknewbery@gmail.com> wrote in message
news:1152803511.839262.60410@p79g2000cwp.googlegro ups.com...
> Hi,
> Does anyone know of the forecast date for the switch off of circuit
> switch data (ie WAP etc) and when everyone will have to start using
> GPRS?
> Mark
>

One assumes that they will continue to offer voice [channels] so what would
stop you putting data down the channel?

On 2006-07-13, Mark <marknewbery@gmail.com> wrote:
> Hi,
> Does anyone know of the forecast date for the switch off of circuit
> switch data (ie WAP etc) and when everyone will have to start using
> GPRS?

Why would there be such a date?

I can see GSM being switched off in the distant future, but I see
no reason to "turn off" CSD and force people on to GPRS -- my
phone doesn't even support GPRS.

--
David Taylor

marknewbery@gmail.com declared for all the world to hear...
> Hi,
> Does anyone know of the forecast date for the switch off of circuit
> switch data (ie WAP etc) and when everyone will have to start using
> GPRS?

I doubt it will ever get switched off.
--
Regards
Jon

In message <q8mdnb1_It6t9CvZnZ2dnUVZ8tydnZ2d@bt.com>, R. Mark Clayton
<nospamclayton@btinternet.com> writes
>"Mark" <marknewbery@gmail.com> wrote in message
>news:1152803511.839262.60410@p79g2000cwp.googlegr oups.com...
>> Hi,
>> Does anyone know of the forecast date for the switch off of circuit
>> switch data (ie WAP etc) and when everyone will have to start using
>> GPRS?

>One assumes that they will continue to offer voice [channels] so what would
>stop you putting data down the channel?

How do you suggest one would do that?
--
Martin Jay
Phone/SMS: +44 7740 191877
Fax: +44 870 915 2124

"Martin Jay" <martin@spam-free.org.uk> wrote in message
news:X6yBl5Nzw6tEFwim@spam-free.org.uk...
> In message <q8mdnb1_It6t9CvZnZ2dnUVZ8tydnZ2d@bt.com>, R. Mark Clayton
> <nospamclayton@btinternet.com> writes
>>"Mark" <marknewbery@gmail.com> wrote in message
>>news:1152803511.839262.60410@p79g2000cwp.googleg roups.com...
>>> Hi,
>>> Does anyone know of the forecast date for the switch off of circuit
>>> switch data (ie WAP etc) and when everyone will have to start using
>>> GPRS?
>
>>One assumes that they will continue to offer voice [channels] so what
>>would
>>stop you putting data down the channel?
>
> How do you suggest one would do that?

With a modem - my [elderly] phone has one built in with an IRDA or wire
connection to a PC. On a good day they were good for 14k4pbs, but more
normally 9k6bps.

More modern ones use Bluetooth.

> --
> Martin Jay
> Phone/SMS: +44 7740 191877
> Fax: +44 870 915 2124

In message <E_adna2_zbW2LyrZnZ2dnUVZ8qednZ2d@bt.com>, R. Mark Clayton
<nospamclayton@btinternet.com> writes
>"Martin Jay" <martin@spam-free.org.uk> wrote in message
>news:X6yBl5Nzw6tEFwim@spam-free.org.uk...
>> In message <q8mdnb1_It6t9CvZnZ2dnUVZ8tydnZ2d@bt.com>, R. Mark Clayton
>> <nospamclayton@btinternet.com> writes
>>>"Mark" <marknewbery@gmail.com> wrote in message
>>>news:1152803511.839262.60410@p79g2000cwp.google groups.com...
>>>> Hi,
>>>> Does anyone know of the forecast date for the switch off of circuit
>>>> switch data (ie WAP etc) and when everyone will have to start using
>>>> GPRS?

>>>One assumes that they will continue to offer voice [channels] so what
>>>would
>>>stop you putting data down the channel?

>> How do you suggest one would do that?

>With a modem - my [elderly] phone has one built in with an IRDA or wire
>connection to a PC. On a good day they were good for 14k4pbs, but more
>normally 9k6bps.
>
>More modern ones use Bluetooth.

Yes, I know. But I think it's more likely these calls would data calls,
which is what the original poster is referring to, rather than voice
calls. Voice calls and data calls over GSM are not the same thing.

Someone did mention that O2 have (or are going to) switch off fax
sending/receiving on their network. However I think it's unlikely that
"circuit switch data" will suffer the same fate.
--
Martin Jay
Phone/SMS: +44 7740 191877
Fax: +44 870 915 2124

Martin Jay wrote:
> >>>One assumes that they will continue to offer voice [channels] so what
> >>>would
> >>>stop you putting data down the channel?
>
> >> How do you suggest one would do that?
>
> >With a modem - my [elderly] phone has one built in with an IRDA or wire
> >connection to a PC. On a good day they were good for 14k4pbs, but more
> >normally 9k6bps.
> >
> >More modern ones use Bluetooth.
>
> Yes, I know. But I think it's more likely these calls would data calls,
> which is what the original poster is referring to, rather than voice
> calls. Voice calls and data calls over GSM are not the same thing.

Exactly - it is impossible to transmit data over a voice channel on a
cellular network.

> Someone did mention that O2 have (or are going to) switch off fax
> sending/receiving on their network. However I think it's unlikely that
> "circuit switch data" will suffer the same fate.

If networks don't allow CSD calls on UMTS, then CSD calls will become a
thing of the past when they do away with GSM.

Andrew Woodvine

On 2006-07-15, Andrew Woodvine <andrew@woodvine.com> wrote:
>>
>> Yes, I know. But I think it's more likely these calls would data calls,
>> which is what the original poster is referring to, rather than voice
>> calls. Voice calls and data calls over GSM are not the same thing.
>
> Exactly - it is impossible to transmit data over a voice channel on a
> cellular network.

Your voice _is_ data, so that is obviously incorrect.

It is merely highly inefficient to do so, since voice calls are
put through a (lossy) compression algorithm, making it harder to send
data. With appropriate encoding, however, it would be possible.

It's far easier to switch off the voice codec and use one specifically
designed for data, though.

--
David Taylor

On 13 Jul 2006 08:11:51 -0700, "Mark" <marknewbery@gmail.com> wrote:

>Hi,
>Does anyone know of the forecast date for the switch off of circuit
>switch data (ie WAP etc) and when everyone will have to start using
>GPRS?

What! Why would they even think about doing this? There are many
mobile applications that use data calling capabilities and I can't see
how GPRS could easily replace a private PSTN data or FAX call without
additional gateways and security issues. As I understand it providing
data call support is not a high cost feature (compared to other
network functions) and provides steady revenue (even if small compared
to voice). This seems to be proven by the fact that even the smallest
third world GSM networks support them.

The only network I know of that doesn't (do they now?) support data
calling is "Three", and since they don't support proper GPRS access or
even reliable voice calling, they''re not likely to be on the provider
list of any sane business.

Rgds
Jonathan