"Mizter T" wrote in message
...
On Sep 29, 11:59 pm, Tom Anderson wrote:
On Wed, 29 Sep 2010, Steve Terry wrote:

"Rupert Moss-Eccardt" wrote:

I believe Orange's PTT ran over GPRS data which is left running
near enough continuously.

Skype on Three i leave running continuously whilst minimised, sometimes
for weeks on end.

Presumably, providing universal 3G coverage to the emergency services
would be an entirely different kettle of fish. Very expensive fish.

Depends how it's implemented. One could suggest ditching TETRA and
running emergency service comms over Skype on Three, and perhaps such
a 'self-evident saving' might even taken seriously by an aspirant,
desperate to be noticed wonk in a right-leaning think-tank eager to
earn their spending-cut spurs...


Even Skype themselves say they should not be used for emergency calls.

The billions already spent on Tetra in the UK means it's years too late
for change to a GSM PTT system.

I can see 3g PTT Android apps being taken up big time in the near future
by commercial users with a closed group use for PTT.
Especially when Android phones get cheaper

Steve Terry
--
"I would like to plead for my right to investigate natural phenomena
without having guns pointed at me.
I also ask for the right to be wrong without being hanged for it."
- Wilhelm Reich, November 1947