Hi all.
I'm trying to use the setvar field in my RT sip configuration to store some 
information about a phone.  This works perfectly for my Polycom phones.  For 
the most part, it works for the Grandstream as well.
However, when the GS tries to transfer a call, the variable isn't available.
For example, I've got a setvar that looks like:
setvar line_id=xxxxx
If I have an extension that looks like:
noop(${line_id}
This line shows that the line_id variable is populated.  Except in the case of 
the Grandstream performing a transfer.  The variable is ALWAYS available on 
the Polycoms.  The sip database records are virtually identical, btw.
Any ideas?
-- 
Take care and have fun,
Mike Diehl.