[Asterisk-Users] WANTED: Toll-Free gateways inEurope/Asia/Africa/South America

[John Todd]

At 10:21 PM +0100 1/20/04, info-lists at robertc.de wrote:
>John Todd said:
>
>>  Robert -
>>     IAX as a protocol is completely dependent on the far-end gateway,
>>  and not on any specifications you can change.  All the gateways at
>>  the moment only support SIP; none support IAX or IAX2, though
>>  hopefully that will change since some of them are actually running
>>  Asterisk as the media gateway.
>>
>>     As soon as they offer IAX in addition to SIP, then we'll also need
>>  to re-examine the way that Asterisk handles ENUM lookups since
>>  currently only one NAPTR is handed back to the dialplan.  For those
>>  nations that have multiple gateways or providers, I have put all the
>>  entries in a round-robin fashion so that the answers will be rotated
>>  by most standard DNS resolver libraries.  However, this quickly
>>  becomes unworkable with multiple responses with different protocols,
>>  and there is already a "preference" factor built into NAPTR records
>>  that should be accessible from the dialplan when an EnumLookup is
>>  returned.
>>
>>     Anyone want to take a swing at it?  Otmar?  :-)
>>
>>  JT
>>
>John,
>Thanks for the info.  I'll leave the code commented out in the dialplan.
>If I put in the NAT SIP patch then will reenable it.  Is an interesting
>concept for some long snowy night reading!
>

You might as well leave the code in there, and just make the GotoIf 
statement look only at IAX as a comparison.  Things may magically 
start to work someday, and you'll never even notice it.  :-)  If your 
resolver chain is in working order, it only adds ~1/5 of a second or 
so (maybe less) to the dial process.

JT