Mailinglist Archive: opensuse (770 mails)

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Re: [opensuse] connecting my telephone to the internet
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On 2012-08-23 23:21, James Knott wrote:
Carlos E. R. wrote:
o make calls on the internet, the asterisk server does need an internet
connection,
but
it doesn't need to be known to other servers. It is actually fairly
trivial:-)
Making calls to somebody else registered on another server? Normally any
sane asterisk
will refuse an incoming call from another asterisk that is unknown.

How is accepting a call from an asterisk server different that one coming in
on an analog
line? Also, ideally, calls between VoIP systems should be via IP, rather
than conversion
to/from "POTS" service at each end.

The POTS system does not accept unauthentified calls. You, as user, may not
know where the
call comes from, but the telcos do. Plus, for a call going from a customer of
one telco to a
customer of another telco there has to be an explicit agreement between both
telcos, on both
technical and commercial sides. It is very complex.

On the other hand, do you remember those movies where the bad guy makes a phone
call to the
police and the call has to last less than 20" or he is identified? That's
rubbish, you are
identified on on the first second, while ringing, at least on countries like
Spain. Even if
you tell your phone to hide your ID, you are identified if the recipient has
the feature "do
not accept hidden ID", which the police has, obviously.



The problem nowdays is identifying calls from internet! From some gateways that
allow the
users to setup any calling number they desire without checking them.



- --
Cheers / Saludos,

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