\begin{thebibliography}{10}

\bibitem{Pand9506:Emerging}
R.~Pandya, ``Emerging mobile and personal communication systems,'' {\em IEEE
  Communications Magazine}, Vol.~33, pp.~44--52, June 1995.

\bibitem{rfc2205}
R.~Braden, Ed., L.~Zhang, S.~Berson, S.~Herzog, and S.~Jamin, ``Resource
  {ReSerVation} protocol {(RSVP)} -- version 1 functional specification,''
  Request for Comments 2205, Internet Engineering Task Force, Sept. 1997.

\bibitem{rfc1889}
H.~Schulzrinne, S.~Casner, R.~Frederick, and V.~Jacobson, ``{RTP:} a transport
  protocol for real-time applications,'' Request for Comments 1889, Internet
  Engineering Task Force, Jan. 1996.

\bibitem{rfc2326}
H.~Schulzrinne, A.~Rao, and R.~Lanphier, ``Real time streaming protocol
  {(RTSP)},'' Request for Comments 2326, Internet Engineering Task Force, Apr.
  1998.

\bibitem{rfc2974}
M.~Handley, C.~Perkins, and E.~Whelan, ``Session announcement protocol,''
  Request for Comments 2974, Internet Engineering Task Force, Oct. 2000.

\bibitem{rfc2327}
M.~Handley and V.~Jacobson, ``{SDP:} session description protocol,'' Request
  for Comments 2327, Internet Engineering Task Force, Apr. 1998.

\bibitem{rfc2119}
S.~Bradner, ``Key words for use in {RFCs} to indicate requirement levels,''
  Request for Comments 2119, Internet Engineering Task Force, Mar. 1997.

\bibitem{rfc2616}
R.~Fielding, J.~Gettys, J.~Mogul, H.~Frystyk, L.~Masinter, P.~Leach, and
  T.~Berners-Lee, ``Hypertext transfer protocol -- {HTTP/1.1},'' Request for
  Comments 2616, Internet Engineering Task Force, June 1999.

\bibitem{rfc2396}
T.~Berners-Lee, R.~Fielding, and L.~Masinter, ``Uniform resource identifiers
  {(URI):} generic syntax,'' Request for Comments 2396, Internet Engineering
  Task Force, Aug. 1998.

\bibitem{rfc1738}
T.~Berners-Lee, L.~Masinter, and M.~McCahill, ``Uniform resource locators
  {(URL)},'' Request for Comments 1738, Internet Engineering Task Force, Dec.
  1994.

\bibitem{draft-ietf-sip-dhcp}
G.~Nair and H.~Schulzrinne, ``{DHCP} option for {SIP} servers,'' {Internet
  Draft}, Internet Engineering Task Force, Apr. 2000.
\newblock Work in progress.

\bibitem{rfc2782}
A.~Gulbrandsen, P.~Vixie, and L.~Esibov, ``A {DNS} {RR} for specifying the
  location of services {(DNS} {SRV)},'' Request for Comments 2782, Internet
  Engineering Task Force, Feb. 2000.

\bibitem{rfc2219}
M.~Hamilton and R.~Wright, ``Use of {DNS} aliases for network services,''
  Request for Comments 2219, Internet Engineering Task Force, Oct. 1997.

\bibitem{rfc1035}
P.~V. Mockapetris, ``Domain names - implementation and specification,'' Request
  for Comments 1035, Internet Engineering Task Force, Nov. 1987.

\bibitem{rfc1288}
D.~Zimmerman, ``The finger user information protocol,'' Request for Comments
  1288, Internet Engineering Task Force, Dec. 1991.

\bibitem{rfc2167}
S.~Williamson, M.~Kosters, D.~Blacka, J.~Singh, and K.~Zeilstra, ``Referral
  whois (rwhois) protocol {V1.5},'' Request for Comments 2167, Internet
  Engineering Task Force, June 1997.

\bibitem{rfc1777}
W.~Yeong, T.~Howes, and S.~Kille, ``Lightweight directory access protocol,''
  Request for Comments 1777, Internet Engineering Task Force, Mar. 1995.

\bibitem{Scho9608:Multicast}
E.~M. Schooler, ``A multicast user directory service for synchronous
  rendezvous,'' Master's Thesis CS-TR-96-18, Department of Computer Science,
  California Institute of Technology, Pasadena, California, Aug. 1996.

\bibitem{rfc2806}
A.~Vaha-Sipila, ``{URLs} for telephone calls,'' Request for Comments 2806,
  Internet Engineering Task Force, Apr. 2000.

\bibitem{rfc768}
J.~Postel, ``User datagram protocol,'' Request for Comments 768, Internet
  Engineering Task Force, Aug. 1980.

\bibitem{rfc761}
J.~Postel, ``{DoD} standard transmission control protocol,'' Request for
  Comments 761, Internet Engineering Task Force, Jan. 1980.

\bibitem{rfc2246}
T.~Dierks and C.~Allen, ``The {TLS} protocol version 1.0,'' Request for
  Comments 2246, Internet Engineering Task Force, Jan. 1999.

\bibitem{rfc2279}
F.~Yergeau, ``{UTF-8,} a transformation format of {ISO} 10646,'' Request for
  Comments 2279, Internet Engineering Task Force, Jan. 1998.

\bibitem{Stev94:TCP1}
W.~R. Stevens, {\em {TCP/IP} illustrated: the protocols}, Vol.~1.
\newblock Reading, Massachusetts: Addison-Wesley, 1994.

\bibitem{rfc1191}
J.~C. Mogul and S.~E. Deering, ``Path {MTU} discovery,'' Request for Comments
  1191, Internet Engineering Task Force, Nov. 1990.

\bibitem{rfc822}
D.~Crocker, ``Standard for the format of {ARPA} internet text messages,''
  Request for Comments 822, Internet Engineering Task Force, Aug. 1982.

\bibitem{rfc2365}
D.~Meyer, ``Administratively scoped {IP} multicast,'' Request for Comments
  2365, Internet Engineering Task Force, July 1998.

\bibitem{rfc1890}
H.~Schulzrinne, ``{RTP} profile for audio and video conferences with minimal
  control,'' Request for Comments 1890, Internet Engineering Task Force, Jan.
  1996.

\bibitem{rfc1750}
D.~Eastlake, 3rd, S.~Crocker, and J.~Schiller, ``Randomness recommendations for
  security,'' Request for Comments 1750, Internet Engineering Task Force, Dec.
  1994.

\bibitem{rfc2426}
F.~Dawson and T.~Howes, ``vcard {MIME} directory profile,'' Request for
  Comments 2426, Internet Engineering Task Force, Sept. 1998.

\bibitem{rfc2849}
G.~Good, ``The {LDAP} data interchange format {(LDIF)} - technical
  specification,'' Request for Comments 2849, Internet Engineering Task Force,
  June 2000.

\bibitem{rfc2368}
P.~Hoffman, L.~Masinter, and J.~Zawinski, ``The mailto {URL} scheme,'' Request
  for Comments 2368, Internet Engineering Task Force, July 1998.

\bibitem{rfc1806}
R.~Troost and S.~Dorner, ``Communicating presentation information in internet
  messages: The content-disposition header,'' Request for Comments 1806,
  Internet Engineering Task Force, June 1995.

\bibitem{rfc1123}
R.~T. Braden, ``Requirements for internet hosts - application and support,''
  Request for Comments 1123, Internet Engineering Task Force, Oct. 1989.

\bibitem{rfc2076}
J.~Palme, ``Common internet message headers,'' Request for Comments 2076,
  Internet Engineering Task Force, Feb. 1997.

\bibitem{rfc1321}
R.~Rivest, ``The {MD5} message-digest algorithm,'' Request for Comments 1321,
  Internet Engineering Task Force, Apr. 1992.

\bibitem{rfc2277}
H.~Alvestrand, ``{IETF} policy on character sets and languages,'' Request for
  Comments 2277, Internet Engineering Task Force, Jan. 1998.

\bibitem{rfc2046}
N.~Freed and N.~Borenstein, ``Multipurpose internet mail extensions {(MIME)}
  part two: Media types,'' Request for Comments 2046, Internet Engineering Task
  Force, Nov. 1996.

\bibitem{rfc1991}
D.~Atkins, W.~Stallings, and P.~Zimmermann, ``{PGP} message exchange formats,''
  Request for Comments 1991, Internet Engineering Task Force, Aug. 1996.

\bibitem{rfc1825}
R.~Atkinson, ``Security architecture for the internet protocol,'' Request for
  Comments 1825, Internet Engineering Task Force, Aug. 1995.

\bibitem{rfc2617}
J.~Franks, P.~Hallam-Baker, J.~Hostetler, S.~Lawrence, P.~Leach, A.~Luotonen,
  and L.~Stewart, ``{HTTP} authentication: Basic and digest access
  authentication,'' Request for Comments 2617, Internet Engineering Task Force,
  June 1999.

\bibitem{rfc2440}
J.~Callas, L.~Donnerhacke, H.~Finney, and R.~Thayer, ``{OpenPGP} message
  format,'' Request for Comments 2440, Internet Engineering Task Force, Nov.
  1998.

\bibitem{rfc2045}
N.~Freed and N.~Borenstein, ``Multipurpose internet mail extensions {(MIME)}
  part one: Format of internet message bodies,'' Request for Comments 2045,
  Internet Engineering Task Force, Nov. 1996.

\bibitem{rfc2234}
D.~Crocker, Ed., and P.~Overell, ``Augmented {BNF} for syntax specifications:
  {ABNF},'' Request for Comments 2234, Internet Engineering Task Force, Nov.
  1997.

\bibitem{rfc2732}
R.~Hinden, B.~Carpenter, and L.~Masinter, ``Format for literal {IPv6} addresses
  in {URL's},'' Request for Comments 2732, Internet Engineering Task Force,
  Dec. 1999.

\bibitem{Scho9306:Case}
E.~M. Schooler, ``Case study: multimedia conference control in a
  packet-switched teleconferencing system,'' {\em Journal of Internetworking:
  Research and Experience}, Vol.~4, pp.~99--120, June 1993.
\newblock ISI reprint series ISI/RS-93-359.

\bibitem{Schu9603:Personal}
H.~Schulzrinne, ``Personal mobility for multimedia services in the
  {Internet},'' in {\em European Workshop on Interactive Distributed Multimedia
  Systems and Services (IDMS)}, (Berlin, Germany), Mar. 1996.

\end{thebibliography}
