On 03/11/2011 9.08, Olivier wrote:
Then, how should such a "valid but unuseful" character, if I may rate it
as such, be handed, then ?
To me:
A. we should not expect any called number to include any character but
those in the 0 to 9 range.
B. we should notify sysadmin anytime an "unuseful" character is
received (to let him, for instance, ask telco do whatever is needed for
this to stop).
Oliver, I partially agree with you but especially when standards are
involved need to play more like devil's advocate.
About A:
1 - Q.931 is not only isdn (gsm, ss7...), usually a specification are
built to plug-in and play together with other specifications. If a
standard says to accept IA-5 that must be done, else we may break
something else.
2 - Maybe the telco switch violate some other specification about the
called number format but:
2a) because of 1) discarding the whole data isn't the right solution.
2b) I don't know if a country specific rule allow for that format.
So totally agree in B from you and the solution suggested by Mudgett:
discard chars that we can't handle log the event so the admin will be
able to do further investigations.
p.s.: sorry for my /Spaghetti-English-language/.
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