UC Corner

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...

Back in the age of Windows-based CallManager (4.x and before), UCCX (a.k.a CRS) stores its configuration in CallManager DC Directory. When...

Cisco used to bind license file to physical MAC address.  Now, it moves to "License MAC", which is a hash value of multiple system...

Many UC appliances (like CUCM, CUPS, etc.) use database to store configuration.  For security and supportability reason, the regular CLI pro...