[asterisk-dev] ENUM and overlapped dialing

[Klaus Darilion]

Timo Teräs schrieb:
> Hi,
> 
> I'm trying to get asterisk SVN to do overlapped dialing with ENUMQUERY / ENUMRESULT.
> But this seems to be impossible currently.
> 
> E.g. if my enum tree is like:
> *.1.my.enum. NAPTR ...
> *.1.2.my.enum. NAPTR ...
> *.2.2.my.enum. NAPTR ...
> 
> The query for "2.my.enum" will return "no data", but query for "3.my.enum"
> would return "domain does not exist". 

FYI: Old bind versions did not had this behaviour but instead returned 
NXDOMAIN in both cases.

regards
klaus



 > And for overlapped dialing, I need to
> do the queries for each parent domain; not just the complete number.
> 
> The basic flaw is that ENUMQUERY does not return the info if query failed because
> of DNS error "domain does not exist" or "no data".
> 
> With "no data" I could make the dialplan execute "Incomplete()" or just make it
> collect more digits. And on "domain does not exist" it could play right away
> "invalid number".
> 
> Now the fix is simple. To make ENUMQUERY / ENUMRESULT somehow return why there
> is no results: because query failed, because domain does not exists or because
> the result was empty (valid child domains exist). Any preference how this
> should be done?
> 
> ENUMQUERY() to return negative errors code/string?
> ENUMRESULT(ID,result) to return error code/string?
> 
> Currently the only way to figure if something bad happened is that
> ENUMRESULT(ID,getnum) returns zero. But as explained this is not enough.
> 
> I'm willing to code and send a patch on the bug tracker.
> 
> Cheers,
>   Timo
> 
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