You can do it however you like, but a common way this is handled is to map the DID to a registrar AOR using alias_db, then to revert the user part of the request URI to the DID (having stored it in a variable prior to the alias_db lookup).

However, not all registrants can accept an invite to a different RURI than the Contact binding they registered. Some want exactly that one and none other than. But if you're sure your registrant can, that would be the way to do it.

"Daniel W. Graham" <dan@cmsinter.net> wrote:

Wondering how others handle DID routing?

I have seen some former posts that talk about using alaias_db, however the request URI gets changed to the users SIP URI and the receiving device (asterisk) cant distinguish the DID as a result.

Any thoughts are appreciated.

-dan
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