Cisco Cisco Customer Voice Portal 8.0(1) Design Guide

Where: R = number of calls per second

For proper serviceability, reserve enough space to retain from 5 to 7 days of log messages.

To set the log directory size, refer to the Operations Console, Infrastructure tab for Call Server set up.

VXML Server call rate calculations are shown in the table and examples below.

The following VXML Server example call rate calculations pertain to the MCS-7845-I3-CCE2 server.

Unified CVP VXML Server sizing with HTTP is simple: one Unified CVP VXML Server can handle up 
to 1200 calls. If you are using Unified CVP VXML Servers, you should size those machines according 
to the following formula:

Calls / 1200, rounded up,

where Calls refers to the number of calls that are actually in Unified CVP VXML Server self-service 
applications at that busy moment snapshot in time.

For UCS performance numbers, refer to the Cisco doc-wiki link: 

http://docwiki.cisco.com/wiki/Virtualization_for_Unified_CVP

Unified CVP can also be configured to use HTTPS on the Unified VXML Server and on the Unified CVP 
IVR Service. (IVR Service can generate very basic VoiceXML documents and is part of the 
Unified CVP Call Server.) Due to the large processing overhead of HTTPS, the Tomcat application 
server can achieve a maximum of only 100 simultaneous connections, depending on the configuration. 

 provides simultaneous call information for HTTPS calls using various applications and call 

flow models.

 

 

 

 

Maximum Simultaneous Calls

1200