05-05-2011, 06:06 PM
| | Re: TOT: Interesting Sunday Times item about phone networks
On Thu, 05 May 2011 01:25:40 +0100, Graham. wrote:
> Sorry Denis, the quoted part was excessively snipped for you to follow.
> The argument wasn't about when 112 was introduced, it was about when
> cross network emergency calls began to be carried.
That's a trickier one to answer.
I believe that originally, when I got my first GSM handset (probably
sometime late '95 or early '96) I could only make 112 calls in the UK if
I was on my home network (cellnet), and if I was out of coverage, was
unable to make such calls at all.
Although it was touted that the GSM standards allowed both sim free and
any network 112 access, there was an issue relating to identifying the
subscribers / being able to trace / reconnect the call from the emergency
call handling centre, and it may have been a situiation that was forced
onto the networks by the emergency services.
I'm not sure if you can make a 112 call without a sim at all, although
the technology supports it the networks may not.
eg I have a 10+ year old handset (Ericsson R520M) that allows me to enter
112 with the banner "SOS Call" without a sim in the phone, but I don't
know what would happen if I then pressed the call button (and as the imei
may be linked to me if anyone digs hard enough, I'm not going to
I also just put a charger on an even older Ericsson SH888, but that's
taking time to wake up ..... in fact (60 mins later) it's not waking up
at all, so I can't test with it.