Release Note

Cisco Unified ICM/Contact Center Enterprise & Hosted Editions, Release 7.5,
Hardware and System Software Specification
©2008-2011 Cisco Systems, Inc. 12
5 Software Constraints and Operating Conditions
5.1 Unified ICM/Contact Center Configuration Limits and Scalability
Constraints
The following table specifies the configuration limits and scalability constraints for the Unified ICM/Contact Center
products. These configuration limits are part of the Unified ICM/Contact Center product design constraints and were
used for system sizing characteristics as tested by Cisco. Most of these system parameters (or combinations of these
system parameters) form contribution factors which impact system capacity.
When you design your contact center, take special care to ensure your design is deployed within these limits. (See
applicable specific comments in the table below for additional detail.) Consult Cisco if you have special configuration
requirements that might exceed specific parameter(s).
The check mark in the table indicates that a given parameter is applicable to the indicated Unified ICM/Contact Center
product edition.
Table 5-1: Configuration Limits and Scalability Constraints, Unified ICM, Unified CC
Maximum Limit Limit
Value
Unified
SCCE
Unified
CCE
Unified
ICME
Unified
CCH
Unified
ICMH
Comments
ECC (Extended
Context Call) and
User Variables Size
(bytes)
5
2,000
    
CVP, CEM, and Outbound
rely on a subset of this max
limit for integration with
Unified ICM.
Number of
Peripheral Variables
(Call Variables)
10
    
Also known as User Variables
in System CCE.
Peripheral Variable
Length (characters)
40
    
40 characters, excluding
terminating NULL
VRU PIMs per VRU
PG
10 
6
   
VRU PIMs per
Generic PG
8 N/A

N/A

N/A
VRU PIMs per
System PG
5
 
N/A N/A N/A IP-IVR PIMs
5
The maximum indicated is independent from the number of ECC and user variables used, with each representing approximately 50
bytes additional storage per record. Note also that with the introduction of selective ECC variable persistence in Unified
ICM/Contact Center 7.1, the maximum includes both persistent and non-persistent variables.
6
These VRU PIMs are for CVP in a Unified System CCE deployment and will be deployed on a separate server – not on the
Agent/IVR Controller.