Push to Talk (PTT) How does it work? Does it work?
in [UK Mobile]
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From: tony sayer on 27 Jun 2010 06:09 In article <i06609$1cg$1(a)news.eternal-september.org>, Steve Terry <gfourwwk(a)tesco.net> scribeth thus >"tony sayer" <tony(a)bancom.co.uk> wrote in message >news:pbvJ4oBgMlJMFwX8(a)bancom.co.uk... >> In article <i0383h$rf7$1(a)news.eternal-september.org>, Steve Terry >> <gfourwwk(a)tesco.net> scribeth thus >>>"alexd" <troffasky(a)hotmail.com> wrote in message >>>news:1343292.snlVU6TSbV(a)ale.cx... ><snip> >>>I suspect that there was / is political intrigue going on about supporting >>>PTT in the UK with only Orange business offering it, had it become a >>>success Police forces around the country could justifiably argued why >>>the Gov had spent a fortune on patchy Tetra airwaves. >> >> Airwave was set up for the emergency services for their use. After all >> what would be the situation like what's happened before if all circuits >> were jammed up with people calling home like what did a few years ago >> round here when the weather was bad?.. >> >GSM can have Multi-Level Precedence with Police and Gov officials >of course being given highest 0 or 1 level priority Sims / accounts. Yes .. and that works under all circumstances?.. Seems that it didn't work that well on 7/7 in London.. If this is such a good idea why aren't the railways using public nets rather than building their own?.. >>> >>>Scandinavian police have had PTT GSM Pro since the mid 1990's. >>>Steve Terry >> >> Their own net or a public one?.. >> Tony Sayer >> >On 900MHz public GSM networks nationally modified to GSM Pro PTT standards > >Also if required extra levels of encryption can be added to individual >handsets, the Ericsson R250s Pro was probably the most popular? >http://www.gsmarena.com/ericsson_r250s_pro-119.php I would have thought that ordinary GSM was secure enough;!.. > >But retailing for about 100quid each on an existing system that would have >only cost a few million to bring up to GSM Pro standard, the whole idea of >GSM Pro for the UK Police would have threatened some seriously big >multi �billion Tetra contacts. > >Another political reason for GSM Pro not to exist in the UK is it would >have scotched at birth the failed commercial Dolphin Tetra system. Well that failed as it didn't work too well and there was no money in it for suppliers. And it wasn't that cheap either!. > >So by not enabling GSM Pro in the UK not only have we prevented the >security services from a cheap effective system but also commercial users >too You say that but every month in Land Mobile theres yet another euro police force going TETRA are you saying there're all stupid or what?.. > >And ordinary GSM users have lost out as well as obviously they would >have had back spots filled in their coverage with gov backed extra cells >on emergency service advice. > They could do that with a bit of co operation with existing nets which look to be trying to loose some site costs.. >The only winner with Tetra Airwaves is Airwaves O2 Ummmm don't Macquarie who own Arqiva own them now?... > >Steve Terry -- Tony Sayer
From: Steve Terry on 27 Jun 2010 18:08 "tony sayer" <tony(a)bancom.co.uk> wrote in message news:2sW+lSAGNyJMFwGN(a)bancom.co.uk... > In article <i06609$1cg$1(a)news.eternal-september.org>, Steve Terry > <gfourwwk(a)tesco.net> scribeth thus >>"tony sayer" <tony(a)bancom.co.uk> wrote in message >>news:pbvJ4oBgMlJMFwX8(a)bancom.co.uk... >>> In article <i0383h$rf7$1(a)news.eternal-september.org>, Steve Terry >>> <gfourwwk(a)tesco.net> scribeth thus >>>>"alexd" <troffasky(a)hotmail.com> wrote in message >>>>news:1343292.snlVU6TSbV(a)ale.cx... >><snip> >>> >>GSM can have Multi-Level Precedence with Police and Gov officials >>of course being given highest 0 or 1 level priority Sims / accounts. > > Yes .. and that works under all circumstances?.. > Seems that it didn't work that well on 7/7 in London.. > Because for some reason in the UK we refuse to adopt all the features of GSM Pro > > If this is such a good idea why aren't the railways using public nets > rather than building their own?.. > Because for some reason in the UK we refuse to adopt all the features of GSM Pro As for why, ask the Treasury with their endless "we know best" political interference Steve Terry -- Welcome Sign-up Bonus of �1 when you signup free at: http://www.topcashback.co.uk/ref/G4WWK
From: Steve Terry on 27 Jun 2010 18:16 "tony sayer" <tony(a)bancom.co.uk> wrote in message news:2cf+5cAhOyJMFwlT(a)bancom.co.uk... > In article <i066br$2ln$1(a)news.eternal-september.org>, Steve Terry > <gfourwwk(a)tesco.net> scribeth thus >>"Gordon Henderson" <gordon+usenet(a)drogon.net> wrote in message >>news:i046jh$2vro$1(a)energise.enta.net... >>> In article <21669172.TW3VsfAaAt(a)ale.cx>, alexd <troffasky(a)hotmail.com> >>> wrote: >> >>For a comparison think of it as like CB but noise free with infinite range > > Yes of course, manages to get round all those holes in the coverage that > the GSM nets have;!.. > OK near infinate range, only limited by the lack of yet to be built cells > >>where you can call with a ringing alert at anytime any other CBer >>individually >>or collectively in your group. > > If its so good why hasn't it caught on yet?.. > Tony Sayer > It has, PTT is very big in the USA As no UK network offered it to the public (with only Orange only offering it to business) it's not surprising it hasn't caught on here. Steve Terry -- Welcome Sign-up Bonus of �1 when you signup free at: http://www.topcashback.co.uk/ref/G4WWK
From: tony sayer on 28 Jun 2010 03:24 In article <i08i62$7ri$1(a)news.eternal-september.org>, Steve Terry <gfourwwk(a)tesco.net> scribeth thus >"tony sayer" <tony(a)bancom.co.uk> wrote in message >news:2sW+lSAGNyJMFwGN(a)bancom.co.uk... >> In article <i06609$1cg$1(a)news.eternal-september.org>, Steve Terry >> <gfourwwk(a)tesco.net> scribeth thus >>>"tony sayer" <tony(a)bancom.co.uk> wrote in message >>>news:pbvJ4oBgMlJMFwX8(a)bancom.co.uk... >>>> In article <i0383h$rf7$1(a)news.eternal-september.org>, Steve Terry >>>> <gfourwwk(a)tesco.net> scribeth thus >>>>>"alexd" <troffasky(a)hotmail.com> wrote in message >>>>>news:1343292.snlVU6TSbV(a)ale.cx... >>><snip> >>>> >>>GSM can have Multi-Level Precedence with Police and Gov officials >>>of course being given highest 0 or 1 level priority Sims / accounts. >> >> Yes .. and that works under all circumstances?.. >> Seems that it didn't work that well on 7/7 in London.. >> >Because for some reason in the UK we refuse to adopt all the features of GSM >Pro This applying to existing public nets?.. >> >> If this is such a good idea why aren't the railways using public nets >> rather than building their own?.. >> >Because for some reason in the UK we refuse to adopt all the features of GSM >Pro Wonder why we didn't do that then?. Are the railways in Europe using public nets then?.. > >As for why, ask the Treasury with their endless "we know best" political >interference > >Steve Terry -- Tony Sayer
From: tony sayer on 28 Jun 2010 03:27
In article <i08ij8$9m3$1(a)news.eternal-september.org>, Steve Terry <gfourwwk(a)tesco.net> scribeth thus >"tony sayer" <tony(a)bancom.co.uk> wrote in message >news:2cf+5cAhOyJMFwlT(a)bancom.co.uk... >> In article <i066br$2ln$1(a)news.eternal-september.org>, Steve Terry >> <gfourwwk(a)tesco.net> scribeth thus >>>"Gordon Henderson" <gordon+usenet(a)drogon.net> wrote in message >>>news:i046jh$2vro$1(a)energise.enta.net... >>>> In article <21669172.TW3VsfAaAt(a)ale.cx>, alexd <troffasky(a)hotmail.com> >>>> wrote: >>> >>>For a comparison think of it as like CB but noise free with infinite range >> >> Yes of course, manages to get round all those holes in the coverage that >> the GSM nets have;!.. >> >OK near infinate range, only limited by the lack of yet to be built cells Any idea when their going to build then or are the going to start giving out sure signal units that you can leave out in the country all over the place?... Assuming any broadband availability;!.. >> >>>where you can call with a ringing alert at anytime any other CBer >>>individually >>>or collectively in your group. >> >> If its so good why hasn't it caught on yet?.. >> Tony Sayer >> >It has, PTT is very big in the USA > Over GSM?.. >As no UK network offered it to the public (with only Orange only offering >it to business) it's not surprising it hasn't caught on here. Why, lack of demand perhaps?.. > >Steve Terry -- Tony Sayer |