etf.org/rfc/rfc2327.txt">RFC2327 MUST be supported by all user agents as a means to describe sessions, and its usage for constructing offers and answers MUST follow the procedures defined in
RFC3261 . The SDP protocol is described in Java by
JSR 141
@see SipProvider
@see RequestEvent
@see ResponseEvent
@see TimeoutEvent
@see IOExceptionEvent
@see TransactionTerminatedEvent
@see DialogTerminatedEvent
@author BEA Systems, NIST
@version 1.2