Mailinglist Archive: opensuse (770 mails)

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Re: [opensuse] connecting my telephone to the internet
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On 2012-08-25 21:42, James Knott wrote:
Carlos E. R. wrote:
I also have worked on that field, but not that long. My experience is with
the 5EEE
only. It is precisely due to that work that I became interested in Linux;-)

I have worked with a wide variety of systems, though not on the big phone
switches.

Legislation in Spain is such that law insists calls are identified because
it is needed
to know whom to charge the phone call to, across different companies. It
started when
the government forced the only telco in existence here (Telefónica), in
1997, to accept
indirect phone calls routed via another company (you prefix your call with a
3 digit
number, and the call is routed via another telco for the long distance part).

The phone company can still identify the phone trunk a call came in to them
on and use
that for billing. However, they have no idea what may be connected to that
trunk at the
customer's end. It could be a local PBX or it could be extended just about
anywhere in
the world, by a variety of means.

The snag is that the identification has to be carried forward to the next telco
receiving the
phone call, which is why caller ID is mandatory here. What I do not know is to
what extent
the PBX can forward an ID or not, because although my knowledge is becoming
fuzzier with
time, I think that the ID was assigned on the big exchanges, not on the PBX.
You say you can
do that on the PBX, but I simply do not know if it is possible here or not.

- --
Cheers / Saludos,

Carlos E. R.
(from 12.1 x86_64 "Asparagus" at Telcontar)
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