[Spce-user] Describing how NCOS works.

[Jon Bonilla (Manwe)]

El Wed, 9 Jan 2013 21:03:30 -0500
Dave Massey <dave at optionsdsl.ca> escribió:

> Could anyone briefly tell me better how the NCOS levels work?  For example I
> want to have a level that only allows dialling of the 1 country code, and
> another level that allows a much bigger list of callable countries., do I
> have to also add to this list all the feature codes, and other things? (Like
> I have a rewrite rule that changes 2000 to *98 because its familiar to this
> area), so I need *98 in that list too?  911, other things like that?
> 
>

Well, NCOS levels work in a backlist or whitelist mode. If you use the mode
where you only allow 1* destinations to be reached it's fine. But yes, you'd
need to add other destinations like local ones. You can do it (if I'm not
wrong) on domain based. Any destination whatever at whatever.local is a local
destination so it's not hard to whitelist voicemail, vsc... etc. I think it's
described in the Handbook.

Regarding emergency calls, these calls bypass ncos checks. the call detected as
emergency, because it has been rewritten to "emergency_*" won't be blocked by
ncos.