> I personally have mine turned on for channel 050, which
> displays the location of the current cell and I also have
> channel 000 Topic Index active.
I use channel 50 ("area info") also. But here (Australia), I've
not seen any carrier broadcast a topic index (I've looked for
the channel zero broadcasts and there are none).
> If I /hot mark/ a channel on my phone will sound an alert when
> on new broadcast, I have the Topic Index hot listed but have
> never had anything come up on it. No point hot listing 050 as
> it would sound every time the phone sees another cell.
My old Siemens S25 can do this, and I sometimes use it to beep
the cell changes to me.
> The /hot mark/ feature is available on all the new Nokia's as
> far as I am aware. Just a shame Cell Broadcast isn't used to
> it's full potential.
If emergency information could carry an embedded sound, then
channel 50 is one very logical place to broadcast it.
> If in the far east tsunami case one out of ten people would
> have gotten an early warning to their cell phones, how many
> would have survived? How many false alarms would you accept
> against saving those people?
How many people regularly check their phones to see whether a
new CB message has arrived? In my experience, it's a rare
phone which implements the possibility of an audible alert for
a new CB message.
I suppose there's the possibility of embedding EMS pre-defined
sounds within CB broadcasts (as per SMS and GSM 03.40), but I
strongly suspect that this falls outside current standards. I
certainly see no reference to such a capability where I'd
expect it, in GSM 03.41 or even 3GPP 23.041.
How many phones have CB reception turned on?
How many phones with CB reception turned on are going to have
the correct CB channel number(s) configured? I'm not sure that
this is something a carrier can configure remotely via the GSM
03.40 SMS port-addressing mechanism, or via SIMs through GSM
11.14.
> Assuming that cell phone operators take security seriously,
> you cannot tap to a BTS and start broadcasting CBS messages of
> your own. You would need to work with a false base station and
> then your coverage would be pretty limited.
No, staff have access. And situations leading to predictable CB
information broadcasts could conceivably be created in the
scenario being discussed.
> Don't want to put words on anybody's master thesis but as a
> hint, think how long it would have taken to send a
> point-to-point SMS to all the people that were in the area
> affected by The tsunami. CBS is not affected by the network
> load or number of active users. Almost all existing GSM phones
> can receive CBS, one could almost start the service tomorrow
> and would immediately reach 2 billion people. SMS has
> important benefits too, leaves a good deal of work for the
> thesis.
Personally, I would like CB to be freely used for its intended
purpose of passing information to the public. I'm just aware
of the potential for misuse, and that's something that should
be taken seriously in a cost-benefit analysis.
John Henderson wrote:
<SNIP>
> How many phones have CB reception turned on?
<SNIP>
I personally have mine turned on for channel 050, which displays the
location of the current cell and I also have channel 000 Topic Index active.
If I /hot mark/ a channel on my phone will sound an alert when on new
broadcast, I have the Topic Index hot listed but have never had anything
come up on it. No point hot listing 050 as it would sound every time
the phone sees another cell.
The /hot mark/ feature is available on all the new Nokia's as far as I
am aware. Just a shame Cell Broadcast isn't used to it's full potential.
--
The views I present are that of my own and NOT of any organisation I may
belong to.
73 de Simon, VK3XEM.
<http://web.acma.gov.au/pls/radcom/client_search.client_lookup?pCLIENT_NO=157452>
<https://www.police.vic.gov.au/lars/lars.asp?File=/Components/screens/PSINFP04/PSINFP04.asp?Key=PSAILT&Page=11&Row=23>
John Henderson wrote:
> Simon Templar wrote:
>
> > I personally have mine turned on for channel 050, which
> > displays the location of the current cell and I also have
> > channel 000 Topic Index active.
>
> I use channel 50 ("area info") also. But here (Australia), I've
> not seen any carrier broadcast a topic index (I've looked for
> the channel zero broadcasts and there are none).
>
> > If I /hot mark/ a channel on my phone will sound an alert when
> > on new broadcast, I have the Topic Index hot listed but have
> > never had anything come up on it. No point hot listing 050 as
> > it would sound every time the phone sees another cell.
>
> My old Siemens S25 can do this, and I sometimes use it to beep
> the cell changes to me.
>
> > The /hot mark/ feature is available on all the new Nokia's as
> > far as I am aware. Just a shame Cell Broadcast isn't used to
> > it's full potential.
>
> If emergency information could carry an embedded sound, then
> channel 50 is one very logical place to broadcast it.
>
> John
I'm working for a Company called Celltick. We have a product call
LiveScreen base on Cell Broadcast that enable effective use of this
channel including beeping when needed always receive mode and
interaction channel as well - the product is used for dynamic content
delivery to users for fun, promotions and emergency.
2 years ago when the tsunami happend in the Far East - our system was
used in Sri-lanka to provide information about the second wave
(www.celltick.com).
> I'm working for a Company called Celltick. We have a product call
> LiveScreen base on Cell Broadcast that enable effective use of this
> channel including beeping when needed always receive mode and
> interaction channel as well - the product is used for dynamic content
> delivery to users for fun, promotions and emergency.
> 2 years ago when the tsunami happend in the Far East - our system was
> used in Sri-lanka to provide information about the second wave
> (www.celltick.com).
>
> Avi Primo
Hi,
I've already read about your products on your website. Can you
provide me with some price examples (e.g. by e-mail)? I would like to
know how much your CBC costs.
Enabling of BTSs for cell broadcast
Linear Mode
