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IntroductionIn enterprise UC environments, CUCM databases accumulate devices that are no longer registered — decommissioned phones, migrated endpoints, or devices that failed to re-register after a maintenancewindow. These consume licenses and create...
Thanks for breaking down such a critical topic so clearly.When analyzing a SIP trace in Wireshark, the Call-ID and Tag combinations are among the first things we look at to avoid getting lost in hundreds of packets. The distinction between the From t...
You can use the link below to download the CUCM 12.5 ISO image:https://archive.org/details/cisco-unified-communications-manager-12.5.1.13900You can also find ISO images for other CUCM versions, such as CUCM 11.x and CUCM 14.x, on the same platform.I ...
Hi,It's great that you're interested in Cisco Collaboration Technologies. To my knowledge, Cisco has removed CUCM virtual environments from DevNet. Instead, they've shifted towards Webex and cloud APIs.There's still a way to gain hands-on experience ...
Great and very informative article. Even though I’m relatively new to UC engineering, I already have basic knowledge of many of these topics, but this article reminded me how much deeper I still need to go.
Hi,This is a common challenge in large CUCM environments. I recently developed an open-source Python tool and wrote a detailed blog post specifically for this use case. The tool combines AXL API for inventory and RISPort70 for real-time registration ...
