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Microsoft® Lync® Server 2013 Unleashed Second Edition by Randy Wintle, Alex Lewis, David Ross, Tom Pacyk

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Planning the SIP Namespace

A key decision in the Lync Online planning process is the SIP namespace that will be used for Lync Online users. The deciding factor in this decision, however, is typically very simple: To provide a seamless UC experience for users, the SIP namespace used for Lync Online must match the primary SMTP namespace used with the organization’s messaging system. Since most organizations that sign up for Lync Online already have an established primary SMTP namespace for use with their existing messaging system, this same namespace is also specified as the Lync Online SIP domain. Multiple domains can also be added and used with Lync Online if this is necessary.

Tip

A good example of the importance of matching the namespace between ...

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