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Monthly Archives: May 2020

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How to collect packet capture from Cisco IP Phone

Collecting Packet Capture from Cisco IP Phone There are instances that you might be asked to collect packet capture from Cisco IP Phone or I would say that you may need the packet capture for your own troubleshooting and learning purposes. For example : You

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Cisco CME – Drop Conference when initiator Disconnects

Cisco CME – Drop Conference when initiator Disconnects Disconnect conference bridge when initiator drops from the conference call Have you ever been asked a question on Cisco Call Manager Express – How to configure Cisco CME in a way that when initiator of the conference disconnects/leaves

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Cisco Unity Connection – Products not supported on current hardware

Cisco Unity Connection – Products not supported on current hardware While installing Cisco Unity Connection from the Cisco Unified Communications Manager ISO like “Bootable_UCSInstall_UCOS_9.1.2.11900-12.sgn.iso” you might encounter an error “Products not supported on current hardware” or it might only allow you to install only Cisco

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Change CUCM IP Address Cisco

Change CUCM IP Address Cisco Changing the IP Address in Cisco Unified Communication Manager sounds very easy but this most crucial part as it may end up in dbreplication failures where you might encounter issues like “Database Communication Error”.  So, we have to be very

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Export SSL private key from Windows

The big difference between a named certificate (cucm.uccollabing.com) and a wildcard (*.uccollabing.com) beside the Common Name (CN) is that the first one can be used in ONE and only ONE place, the server/machine that generated the Certificate Signing Request (CSR); while the wildcard certificate on

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Cisco Any Connect with DUO MFA

Cisco ASA – Cisco AnyConnect with DUO Multi Factor Authentication  Recently i though to deploy Cisco ASA in my lab and try Multi Factor Authentication with Cisco owned DUO app. After installing Cisco ASA and complete the basic configuration, i started with DUO configuration on

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What is a Refresh Upgrade (RU) Cisco?

What is a Refresh Upgrade (RU)?   Many of us have come across the name Refresh Upgrade or RU but do we know what it is? Well, when we do an upgrade of Cisco Unified Communications Manager, Cisco Unity Connection, Cisco Unified Contact Center Express,

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Cisco PCD Cluster Discovery Internal Error

Cisco PCD Cluster Discovery Internal Error Have you ever used Cisco Prime Collaboration Deployment Tool to migrate Unified Communications from Legacy to New Cluster? If yes, then there are times when you may encounter an error “Internal Error” while discovering the machines. If you encounter

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Migrating ITL files between CUCM Clusters

Migrating ITL files between CUCM Clusters When migrating IP Phones from CUCM version 8 on wards to a newer version, you may encounter IP Phones registration issues because of security feature which uses ITL (Initial Trust List) files.  This will not allow you to register

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Check Database Replication CUCM Cisco

Check Database Replication CUCM Cisco I am sure most of you knows how to check Database Replication on Cisco Unified Communication Manager or Cisco Unity Connection. If you don’t know how to check Database Replication, this post will be helpful for you. The below information