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Support for Microsoft Live Communications Server 2005

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RTC Client API version 1.3 contains features that support enhancements and changes to Microsoft Live Communications Server 2005.

Federation

Federation provides a secure method for companies and networks to interconnect their presence and instant messaging infrastructure to enable communications across enterprise boundaries. Federation is a new feature for Microsoft® Office Live Communications Server 2005. For more information about Federation, see the Microsoft Office Live Communications Server 2005 documentation.

The RTC Client API version 1.3 enables an application to check whether a participant is a federated user and whether that federated system is archiving instant messages.

Use RTCST_MULTIPARTY_IM instead of RTCST_IM

For Live Communications Server 2005, the RTCST_IM session type is not supported in order to comply with RFC 3265. Applications should use RTCST_MULTIPARTY_IM. RTCST_IM is still supported on Live Communications Server 2003.

If an application must use an RTCST_IM session on Live Communications Server 2005, it can do so using the TLS transport.