[Users] Transactional Stateful Proxy

Hello In the OpenSER feature list it says that it support transactional stateful SIP Proxy processing. Does that mean Call Stateful? I mean if a session is established and a UA sends a re-INVITATION (for example to add video to voice) will the OpenSER Proxy will be informed of this new transaction ? And eventually can it disallow this new transaction (if there is no enough resources like bandwith)? Regards, Thanks. -- Michel Bensoussan Extricom Ltd. Tel-Aviv University, The Wolfson Computer and Software Engineering Building 30 Haim Levanon Street, P.O.B. 39040 Tel-Aviv, 61390 Israel Tel: +972 3 745 1000 ext 1065 Fax: +972 3 745 1001