Cucm subscriber limits

[Maheshwar Tayal]

As per UCS based guidelines, 10,000 users can be supported per VM (on B series blade server's)

We need to integrate additional 4 Contact center's based on UCCX with same system's.

How much this capacity of 10,000 users will bet reduced due to additional 4 UCCX servers.

Do we have any limits/sizing doc around same.

[jgreenberg]

Hi Maheshwar,

    I would review the Docwiki for UConUCS located at http://docwiki.cisco.com/wiki/Unified_Communications_Virtualization. You need to plan your UC solution around the Vcpu, Memory, and hard drive space required for each of your applications. I would also use the pre-built OVA templates Cisco has provided. This will create you Virtual machines to Cisco's recommended sizing guidelines.

HTH,

   Jon

[skilambi]

In addition sizing tools are here tools.cisco.com/cucst

Thanks

Srini

[Maheshwar Tayal]

After consulting virtualization guides from wiki and cucst tools etc., only this query was asked.

Do we have any document which mentions details around scaling down by how many Users/phones when UCCX agents are added in CUCM

[jgreenberg]

I think the 2 servers are mutually exclusive. You can continue to have your 10,000 users on CUCM, however there is a limit of 300 logged in agents per UCCX cluster (1 server or 2 servers in HA). I think in 8.5 there is actually an OVA for 400 agents as well. If you needed more than 300/400 agents, you would need to add additional UCCX clusters or use Contact Center Enterprise. I hope I am answering your question.

HTH,

   Jon