[asterisk-users] Asterisk : using setvar with IP Realtime and variable inheritance

[David Backeberg]

> callerid_internal=test <710>;did=5555551234
> Again, this works fine. The problem is when I forward my calls to another
> outside line (using Polyocm phones), and need to know the ${did} value at
> that point.  It's empty.

The other answer looks pretty good. If that doesn't work, do a sip
debug on your console, and see if the values you want are in the
traffic at all. You can set up some more complicated rules to parse
your SIP headers if the values are just in a different field.