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Microsoft® Lync Server 2010 Unleashed by Tom Pacyk, Andrew Abbate, Alex Lewis

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Public IM Connectivity

Lync Server Public IM Connectivity (PIC) enables users to communicate with public instant messaging (IM) networks such as MSN, AOL, and Yahoo!. It operates in a similar fashion to federation in that it uses the same ports and topology, but has a slightly different set of steps to configure. The main difference is that Public IM Connectivity must be configured through the organization’s licensing site with Microsoft. The public IM providers do not use the SRV record for open federation and instead require these manual steps to provision the initial connectivity.

Administrators can choose to allow only specific SIP domains to communicate with the public IM providers. Each SIP domain supported for Public IM Connectivity must ...

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