Although not popular, you can use a proprietary header for that purpose. Other UAs should gracefully handle unknown headers. Still, be ready to experience interoperability issues.
BTW, try either not to pass the data or find a standard header for those parameters. What are parameters used for? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
