[Serusers] Branch structure

Hi, I have a question. Can I put two URI in the same Invite message?.... My Idea is this… I have a module (MY MODULE), and an external program (MY_PROGRAM)… those are connected by Unix socket… When SER receives an Invite, Mymodule send this to Myprogram, and Myprogram rewrite de uri of the invite and send to Mymodule.. then I want to implement Forwarding…. That is… A(pedro) --------------------call ---------------------------> B(alice house) If B don’t answer, i must forward to C(alice office)….. and so on… It could arrive doing 2 Uris in the same invite… or I have a branch structure in the msg message? Myprogam do Accounting, routing and others Some Ideas.. Thank in advance, Ing. Francisco Talavera Dpto. Investigación y Desarrollo Conexión S.A.