\begin{thebibliography}{1}

\bibitem{rfc2327}
M.~Handley and V.~Jacobson, \htmladdnormallink{``{SDP:} session description
  protocol,''}{http://www.rfc-editor.org/rfc/rfc2327.txt} RFC 2327, Internet
  Engineering Task Force, Apr. 1998.

\bibitem{rfc2119}
S.~Bradner, \htmladdnormallink{``Key words for use in {RFCs} to indicate
  requirement levels,''}{http://www.rfc-editor.org/rfc/rfc2119.txt} RFC 2119,
  Internet Engineering Task Force, Mar. 1997.

\bibitem{rfc3108}
R.~Kumar and M.~Mostafa, \htmladdnormallink{``Conventions for the use of the
  session description protocol {(SDP)} for {ATM} bearer
  connections,''}{http://www.rfc-editor.org/rfc/rfc3108.txt} RFC 3108, Internet
  Engineering Task Force, May 2001.

\bibitem{rfc1889}
H.~Schulzrinne, S.~Casner, R.~Frederick, and V.~Jacobson,
  \htmladdnormallink{``{RTP:} a transport protocol for real-time
  applications,''}{http://www.rfc-editor.org/rfc/rfc1889.txt} RFC 1889,
  Internet Engineering Task Force, Jan. 1996.

\bibitem{rfc1890}
H.~Schulzrinne, \htmladdnormallink{``{RTP} profile for audio and video
  conferences with minimal
  control,''}{http://www.rfc-editor.org/rfc/rfc1890.txt} RFC 1890, Internet
  Engineering Task Force, Jan. 1996.

\end{thebibliography}
