Cisco Unity Connection - Installing, Integrating, and Troubleshooting

[Brooke Hammer]

Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from  Friday, April 4, 2025  through Friday, April 18, 2025. Our colleague Brad Magnani will be waiting to assist you and resolve any questions that have not been clarified, or answer any new questions that you may have.

Cisco Unity Connection is a voicemail and unified messaging platform with a comprehensive feature set and is based on the Linux unified communications operating system. With Cisco Unity Connection, you can access and manage voice messages in variety of ways, using your email inbox, web browser, the Cisco Jabber messaging integration platform, Cisco Unified IP Phone, smartphone, tablet, and more.

Official Resources:

Install & Upgrade Guides:
https://www.cisco.com/c/en/us/support/unified-communications/unity-connection/products-installation-guides-list.html

Maintain and Operate Guides:
https://www.cisco.com/c/en/us/support/unified-communications/unity-connection/products-maintenance-guides-list.html

Configuration Guides:
https://www.cisco.com/c/en/us/support/unified-communications/unity-connection/products-installation-and-configuration-guides-list.html

Troubleshooting Guides:
https://www.cisco.com/c/en/us/support/unified-communications/unity-connection/products-troubleshooting-guides-list.html

Join us for this insightful Ask Me Anything session and gain valuable insights into the world of Cisco Unity Connection. Let's uncover the solutions to your challenges and explore the vast possibilities in this dynamic field.

Note: Please post your question as a comment below no later than April 18, 2025.

Post your question below by clicking "Reply"

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Our Expert

Brad Magnani is currently a member of the High Touch Technical Support (HTTS) - Collaboration team. He has attended Cisco Live and has provided mentorship and technical training in the Bangalore and Krakow TAC centers. Since 2007, his areas of expertise have been Cisco Unity and Cisco Unity Connection. Brad also has experience troubleshooting and working with various voice products, including Cisco Unity, Cisco Unity Connection, IM & Presence, Communications Manager, and Jabber. He graduated with a Bachelor's of Science in Applied Networking and Systems Administration from Rochester Institute of Technology. He has achieved certifications for Unity Support Specialist and CCNP Collaboration.

[David.roseSC]

Hi Brad - We have two different data centers each with their own Unity HA pair. What is the best way to allow users in each cluster to find and send messages to each other without consolidating all users to a single cluster?

[Brad Magnani]

Hi @David.roseSC.  This can be accomplished using HTTPS networking between both cluster locations.  You can find details explaining the feature here: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/15/https_networking/guide/b_15cuchttpsnet/b_15cuchttpsnet_chapter_00.html

[ckarawani2]

Hey Brad, 

Microsoft announced that starting October 1, 2026, Exchange Web Services (EWS) requests to Exchange Online will be blocked.

This retirement applies only to Microsoft 365 and Exchange Online environments. There are no changes to EWS in Exchange Server. EWS will continue to be fully supported for Exchange on-premises environments. Applications that rely on EWS for mail delivery will stop working once the deadline is reached.

Does this affect the Cisco Unity voicemail integration with Exchange Online?

[Roger Kallberg]

Yes it does. I checked with our account team at Cisco a few weeks ago and they said it going to come a version that uses the Graph API for this instead of EWS. Likely it will be in  SU4 or SU5 of version 15. Unsure on other versions as it wasn’t applicable to use since we are on version 15. The time plan is to have this out in early 2026.

[MiaColeman]

Hi Brad,

Great Info! I have a problem where audio quality playing from CUC is sometimes garbled and jittery. Where do I start troubleshooting?

Thanks,

Mia

[Brad Magnani]

Hi @MiaColeman,

The best place to start is the audio quality troubleshooting guide here: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/15/troubleshooting/guide/b_15cuctsg/b_15cuctsg_chapter_01111.html

The quickest place to isolate is by running a network capture from CUC while reproducing the audio quality issue.  The packet capture can then be played back to listen if the audio quality issue is sourced from CUC, or if it's leaving CUC clean.  At that point you'll know it's somewhere upstream that's introducing the quality issue (network, or possibly telco issue depending on your call flow).

How to run a network capture from CUC (or on any VOS product for that matter): https://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unity-connection/116190-qanda-product-00.html