I need to pass information between OpenSER and Asterisk for a couple applications I have created.  I figured the best way to do this would be to append a header field and have either OpenSER or Asterisk peel it off and take a look at what it says.  However, I’ve found that Asterisk some times gets perturbed by the additional header field. 

Is it possible/wise to create your own headers?  What other way could I pass information (used for scripts in Asterisk/OpenSER) between the two servers?

Thanks,

kw