University have a Cisco IP telephony estate and wanted to leverage their investment in Office 365 for voicemail services using Exchange Online. As direct connectivity between Cisco and Exchange Online is not supported, I deployed two Sonus Session Border Controllers with failover routing in between Cisco and Exchange Online.
- Sonus Session Border Controller installation
- Sonus Session Border Controller configuration including SIP, TLS, Transformation Rules
- Integration with Cisco CUCM for voicemail
- Exchange Online UM configuration