[Asterisk-Users] SIP incoming distinctive ring

[Thomas B. Clark]

I now have a virtual number in addition to my main number from 
broadvoice.  Enabling distinctive ring in their portal results in the 
following SIP header being received:

Alert-Info: <http://127.0.0.1/Bellcore-dr3>

It looks like Asterisk has the ability to generate an outgoing 
Alert-Info header (actually Alert-info, not sure if it makes a 
difference), but does not understand incoming headers.

I cannot find any discussion of such a feature. Would there be any other 
interest in it?

Alternatively, if there were any way to read the headers into variables 
from within Asterisk, I could then use that information to make 
decisions within extensions.conf. Is there some way to do this that I'm 
not thinking of?