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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>
> The primary reason is time sensitive messages. The phone carriers are
> too tight arsed to set up SMS properly to ensure messages are sent
> quickly and effectively.
Indeed. Are there any commercial paging networks still active or are
there only private, job-specific networks around?
> Bloody foolish in my opinion with several Emergency Services in
> Victoria recently having set up a state wide paging network for
> themselves. If European Emergency Services can make use of Priority
> SMS, we should be able to here as well.
Can a GSM network provide an SLA on a priority SMS during _serious_
network congestion? eg, London Bombings grinding networks to a halt. I
was in Bristol that day and couldn't use my phone all day on any
network.
PD

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Paul Day
John Henderson - 19 Jun 2007 07:14 GMT
> Can a GSM network provide an SLA on a priority SMS during
> _serious_ network congestion? eg, London Bombings grinding
> networks to a halt. I was in Bristol that day and couldn't use
> my phone all day on any network.
They might have been using the "access control class" facility
to keep the network relatively clear for emergency traffic.
There are 15 access control classes, with each SIM being
allocated to one of these. 10 apply to ordinary users, and
every ordinary SIM is randomly assigned to one of these. One
or more classes can be denied access to the network at any
time.
In a severe network overload situation, a few classes at a time
on a rotational basis can be denied access so that others can
carry on reasonably normally for a time.
In an emergency, all 10 "normal" classes might be denied access
so that the 5 "high priority" classes of user can have the
network to themselves.
Refer GSM 02.11, GSM 11.11, 3GPP 22.011 and 3GPP 31.102.
John
other-news@usa.net - 19 Jun 2007 10:04 GMT
>> The primary reason is time sensitive messages. The phone carriers are
>> too tight arsed to set up SMS properly to ensure messages are sent
>> quickly and effectively.
.
.
.
>Can a GSM network provide an SLA on a priority SMS during _serious_
>network congestion? eg, London Bombings grinding networks to a halt. I
>was in Bristol that day and couldn't use my phone all day on any
>network.
The authorities turned off network access, that's why. The bad guys
use phones for doing bad things.
Seem pretty standard procedure from what is in the press.
>> OT, but why would anyone use a pager instead of SMS these days?
>>
[quoted text clipped - 3 lines]
> tight arsed to set up SMS properly to ensure messages are sent quickly and
> effectively.
Mine work fine. Have for years and years
Simon Templar - 22 Jun 2007 11:12 GMT
> Mine work fine. Have for years and years
That may well be the case, but there are many instances of delays that
Emergency Services cannot risk. That's unfortunately why they refuse to
make use of SMS for primary call outs.

Signature
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>
Michael J - 23 Jun 2007 12:24 GMT
>> Mine work fine. Have for years and years
>
> That may well be the case, but there are many instances of delays that
> Emergency Services cannot risk. That's unfortunately why they refuse to
> make use of SMS for primary call outs.
More fool them