Re: Comments on RFC2806bis

I've changed things so that all digit strings can contain hex digits. 
This seems simplest and least likely to cause future problems. In 
general, I don't think syntactic checking of phone numbers buys much, 
given that most syntactically legal random numbers are probably not valid.

Yu, James wrote:
> I agree that it is better to use hex digits also for global-number so that
> there is no need to modify the RFC if E.164 is changed.   Allowing hex
> digits does not mean all numbers are valid.  Even if we only allow decimal
> digits for country codes, those country code values, if not yet assigned by
> ITU-T, are invalid.  Suggest to use hex digits and let the node decide
> whether a number/prefix is valid or not for routing.
>