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Connecting Sonus SBC 1000 to Exchange Online UM

In my latest venture, I have been tasked with connecting a customer’s Cisco CUCM deployment with Exchange Online UM provided by Office 365. In order to achieve this, and because Office 365 does not support direct SIP trunks between itself and CUCM, we had to deploy a Session Border Controller (SBC) in the middle.

The model chosen was a Sonus SBC 1000 3-DSP SIP:SIP licensable SBC for its ease of configuration and support with Microsoft technologies.

Now, Sonus have provided a relatively high level document on configuring this process, and although the document was designed using software version 2.2, it is still relevant in the latest 4.2.1 release.

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