-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlA5PEsACgkQIvFNjefEBxrTYACfWF0z+0g2Q1F9Rif3l34d8A4u FxYAnjFRqTyJ0lvZglXnvOKkBWWE7eDw =QvAe -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org