UC Corner

Lately I had to recreate a MPLS network.  I used to use GNS3 as it's user friendly and can use vanilla IOS (i.e. you may download IOS fr...

Not everyone has the luxury of running a Cisco UCS server at home.  Even if you do, it's a little bit heavy to drag the UCS around.  It ...

I got a lot of feedback regarding the problem after rooting Cisco UC products (CUCM/UCCX, etc.).  The symptom was that every service is in [...

Since from UCM 9.0, Cisco introduced ELM (Enterprise License Manager).  Instead of putting license files on UCM, CUC servers, now you put li...

This has nothing to do with Unified Communications.  But I don't have another blog for video editing.  Thus I post it here for anyone w...

History Cisco UC (Unified Communication) family has many members - CUCM (CallManager), Unity, UCCX (IPCC Express), CER, CUPS,...

Disclaimer: The following information is for research and experiment purpose only.  It's not the author's intention to circumvent...