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 23:48, James Knott wrote:
That number is carried over SS7 on the POTS network and a similar method
exists for SIP.
If a carrier does not pass on that number, they're violating the SS7 specs.

Pre 1997 the telco in Spain did not. I worked for one of the newcommer telcos,
and one of the
problems was that some calls did not carry the ID via SS7 signaling. I was in
the department
that received those problems, we found out that.

Of course, in most of those occasions, it happened that the caller was on one
of the few
analog switches remaining (rotary?), so caller ID was impossible. Telefónica
had to supply us
with a list of all the phone ranges for which caller ID was impossible, so that
our
telemarketers did not offer service to them.

- --
Cheers / Saludos,

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