"Rupert Moss-Eccardt" wrote in message
...
Steve Terry wrote:
"Rupert wrote in message
...
Steve Terry wrote:
"tony wrote in message
...
In , Steve Terry
scribeth thus
"Roy wrote in message
...
On 22 Sep, 11:55, wrote:
"Roy wrote in message



On 22/09/10 11:24, Recliner wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't


GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Tetra is a badly conceived and applied standard that should never have
existed and only does because of the vast amounts of money and
bureaucracy dedicated to it.

Dolphin has proved it to be a commercial failure.

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

Steve Terry wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't


GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Translation: Steve Terry doesn't understand the issues. Think why I
chose TGV especially, rather than another line. Umm. Perhaps it is to
do with the speed of the handset relative to the basestation.

Tetra is a badly conceived and applied standard that should never have
existed and only does because of the vast amounts of money and
bureaucracy dedicated to it.

Dolphin has proved it to be a commercial failure.

No, Dolphin has proved to be a commercial failure. There are
commercially succesful Tetra networks in a number of countries.

I realise you know very little. Perhaps you should Google a bit and
develop your understanding.

"Rupert Moss-Eccardt" wrote in message
...
Steve Terry wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't

GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Translation: Steve Terry doesn't understand the issues. Think why I chose
TGV especially, rather than another line. Umm. Perhaps it is to do with
the speed of the handset relative to the basestation.


Of course i understand the speed limitations of GSM, that's why i pointed
out
the use of GSM on airliners using onboard cells.

Maybe you haven't noticed but airliners travel faster than the TGV

So which do you think a member of the emergency services would
use to make a call on such an airliner, GSM or their Tetra?

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

Steve Terry wrote:
"Rupert wrote in message
...
Steve Terry wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't

GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Translation: Steve Terry doesn't understand the issues. Think why I chose
TGV especially, rather than another line. Umm. Perhaps it is to do with
the speed of the handset relative to the basestation.


Of course i understand the speed limitations of GSM, that's why i pointed
out
the use of GSM on airliners using onboard cells.


You have to have the cells onboard and onboard cells are still sparse.


Maybe you haven't noticed but airliners travel faster than the TGV

So which do you think a member of the emergency services would
use to make a call on such an airliner, GSM or their Tetra?

Well, the users I represented would use their Airwave handsets to the
fixed wing following behind. And, because Tetra has been designed in
this way, they would be able to have a talk group with people ahead and
behind the plane. Oh, and could have quick call set up. Oh and do this
even in the event of riot and civil commotion. Oh and talk directly with
other agencies. And quite a lot else besides which I won't go into here
coz it won't help

In article , Steve Terry
scribeth thus

"Rupert Moss-Eccardt" wrote in message
...
Steve Terry wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't

GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Translation: Steve Terry doesn't understand the issues. Think why I chose
TGV especially, rather than another line. Umm. Perhaps it is to do with
the speed of the handset relative to the basestation.


Of course i understand the speed limitations of GSM, that's why i pointed
out
the use of GSM on airliners using onboard cells.


Maybe you haven't noticed but airliners travel faster than the TGV

Not a lot to do with it really?..


So which do you think a member of the emergency services would
use to make a call on such an airliner, GSM or their Tetra?

Aircraft radio...

Steve Terry

--
Tony Sayer

In article , Rupert Moss-Eccardt
scribeth thus
Steve Terry wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't


GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Translation: Steve Terry doesn't understand the issues. Think why I
chose TGV especially, rather than another line.


Umm. Perhaps it is to
do with the speed of the handset relative to the basestation.



Think about that one;?....

--
Tony Sayer

On Fri, Sep 24, 2010 at 12:33:30PM +0100, Rupert Moss-Eccardt wrote:
Steve Terry wrote:
Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't
Translation: Steve Terry doesn't understand the issues. Think why I
chose TGV especially, rather than another line. Umm. Perhaps it is to
do with the speed of the handset relative to the basestation.

I've used GSM on a TGV, for both voice and data. And no, it wasn't
stopped, it was zooming along at eleventy squillion miles an hour
between Paris and Strasbourg.

--
David Cantrell | Cake Smuggler Extraordinaire

Seven o'clock in the morning is something that
happens to those less fortunate than me

In article , Steve Terry
scribeth thus
"Rupert Moss-Eccardt" wrote in message
...
Steve Terry wrote:
"Rupert wrote in message
...
Steve Terry wrote:
"tony wrote in message
...
In , Steve Terry
scribeth thus
"Roy wrote in message
...
On 22 Sep, 11:55, wrote:
"Roy wrote in message



On 22/09/10 11:24, Recliner wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't


GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Tetra is a badly conceived and applied standard that should never have
existed and only does because of the vast amounts of money and
bureaucracy dedicated to it.

But quite why?..

Dolphin has proved it to be a commercial failure.

Dolphin was never planned properly, never worked as it should have done,
and no one understood it and what it could and couldn't do;!;..

Steve Terry

--
Tony Sayer

"tony sayer" wrote in message
...
In article , Steve Terry
scribeth thus
"Rupert Moss-Eccardt" wrote in message
...
Steve Terry wrote:
"Rupert wrote in message
...
Steve Terry wrote:
"tony wrote in message
...
In , Steve Terry
scribeth thus
"Roy wrote in message
...
On 22 Sep, 11:55, wrote:
"Roy wrote in message



On 22/09/10 11:24, Recliner wrote:
snip

Tetra is a badly conceived and applied standard that should never have
existed and only does because of the vast amounts of money and
bureaucracy dedicated to it.

But quite why?..


Clearly Politics, the Home Office wanted a system that was entirely
independent of publicly available networks.
No matter how badly conceived or developed, with no limit on cost.
With whatever the disadvantage to the public, or even creating unknown
health issues.
(What **** thought it a good idea to multiplex Tetra at only 17.6Hz?!
a frequency known to cause visual epilepsy )

Not having a entirely independent system not being something that
worried the Scandinavians meant they got a very practical digital system,
(900MHz GSM Pro) years earlier for about one hundredth the price of Tetra.

GSM Pro of course offers closed secure PTT groups and normal
international phone calls, to all emergency services and commercial users.

In the USA PTT over cellular is fast becoming popular for closed
commercial and emergency services groups.
http://en.wikipedia.org/wiki/Push_to_talk
(Maybe cos Tetra with its vested interests doesn't exist there?)

Only Orange offered a hardly advertised PTT over GSM here,
and that was only to business users, such limited offering was
destined to fail.

Why almost non existent offerings from the UK GSM networks?
IMHO it must have been Gov pressure not to affect Tetra
and Dolphin sales and the vast army of bureaucrats it supports

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

Steve Terry wrote:
"tony wrote in message
...
In , Steve Terry
scribeth thus
"Rupert wrote in message
...
Steve Terry wrote:
"Rupert wrote in message
...
Steve Terry wrote:
"tony wrote in message
...
In , Steve Terry
scribeth thus
"Roy wrote in message
...
On 22 Sep, 11:55, wrote:
"Roy wrote in message



On 22/09/10 11:24, Recliner wrote:
snip

Tetra is a badly conceived and applied standard that should never have
existed and only does because of the vast amounts of money and
bureaucracy dedicated to it.

But quite why?..


Clearly Politics, the Home Office wanted a system that was entirely
independent of publicly available networks.
No matter how badly conceived or developed, with no limit on cost.
With whatever the disadvantage to the public, or even creating unknown
health issues.
(What **** thought it a good idea to multiplex Tetra at only 17.6Hz?!
a frequency known to cause visual epilepsy )

Your first incorrect assumption was that the Home Office had any real
input into Tetra. Wrong department. Try again.

Not having a entirely independent system not being something that
worried the Scandinavians meant they got a very practical digital system,
(900MHz GSM Pro) years earlier for about one hundredth the price of Tetra.

When do you think GSM Pro became a "standard". When do you think Tetra did?

GSM Pro of course offers closed secure PTT groups and normal
international phone calls, to all emergency services and commercial users.

In the USA PTT over cellular is fast becoming popular for closed
commercial and emergency services groups.
http://en.wikipedia.org/wiki/Push_to_talk
(Maybe cos Tetra with its vested interests doesn't exist there?)

There are still issues. Perhaps you should read stuff around the DHS
problems with there not being a single standard for all agencies.

Only Orange offered a hardly advertised PTT over GSM here,
and that was only to business users, such limited offering was
destined to fail.

Why almost non existent offerings from the UK GSM networks?
IMHO it must have been Gov pressure not to affect Tetra
and Dolphin sales and the vast army of bureaucrats it supports


The PTT over GSM has well-known shortcomings. Call setup time is too
long, talk groups are too small. But please don't let facts get in the
way of a good rant.

Rather than parading your ignorance repeatedly, why not look some stuff
up and make a reasoned argument?