Unified Presence : How many Servers do I Need

[iantra123]

Hi,

We plan to integrate Unified Presence in our Telephony system.

There is two (2) sites that have CUCM cluster.

We have 2000 users in each site.

The CUCM for these sites are connected using InterclusterTrunk.

How many Presence server do I need to implement? 1 or 2 ? In each Site?

I've already read the presence documentation, but I cannot see the size.

Best regards,

Antra

[William Bell · Accepted solution]

One portion of the data you are looking for:

http://docwiki.cisco.com/wiki/Cisco_Unified_Presence%2C_Release_7.x_--_User_Capacities_with_Cisco_Unified_Presence_Release_7.x#User_Capacities_with_Cisco_Unified_Presence_Release_7.x

able: Table 3     Cisco Unified Presence 7.x  Capacities

Cisco Unified Communications Mode
Deployment Model	Platform Model	Number of Users Supported
Single Node	MCS7816	500
Single Node	MCS7825	1000
Single Node	MCS7835	2500
Single Node	MCS7845	5000
Multi-Node Cluster (6 nodes)	MCS7816	3000
Multi-Node Cluster (6 nodes)	MCS7825	6000
Multi-Node Cluster (6 nodes)	MCS7835	15000
Multi-Node Cluster (6 nodes)	MCS7845	30000

In regards to multiple CUCM clusters.  I was under the impression that a CUPS server could only integrate with one CUCM cluster.  At least from a provisioning standpoint but I could be mistaken.

HTH.

Regards,
Bill

[Jonathan Schulenberg · Accepted solution]

William is correct; each CUPS server cluster can only integrate with one CUCM cluster. You can perform inter-CUPS cluster federation to get presence and instant messaging functional between them.