Cisco Cisco IP Contact Center Release 4.6.1 Leaflet
3-12
Cisco Unified Contact Center Enterprise 7.5 SRND
Chapter 3 Design Considerations for High Availability
Unified IP IVR Design Considerations
Unified IP IVR Design Considerations
The JTAPI subsystem in Unified IP IVR can establish connections with two CTI Managers on different
subscribers in the Unified CM cluster. This feature enables Unified CCE designs to add Unified IP IVR
redundancy at the CTI Manager level such as the Unified ICM Peripheral Gateway connections.
Additionally, Cisco recommends to having multiple, redundant IP-IVR servers in the design and
allowing the Unified ICM call routing script to load-balance calls automatically between the available
IP-IVR resources.
subscribers in the Unified CM cluster. This feature enables Unified CCE designs to add Unified IP IVR
redundancy at the CTI Manager level such as the Unified ICM Peripheral Gateway connections.
Additionally, Cisco recommends to having multiple, redundant IP-IVR servers in the design and
allowing the Unified ICM call routing script to load-balance calls automatically between the available
IP-IVR resources.
shows two Unified IP IVR servers configured for redundancy within one Unified CM cluster.
The Unified IP IVR group should be configured so that each server is connected to a different CTI
Manager service on different Unified CM subscribers in the cluster for high availability. Using the
redundancy feature of the JTAPI subsystem in the Unified IP IVR server, you can implement redundancy
by adding the IP addresses or host names of two Unified CMs from the cluster. Then, if one of the
Unified CMs fails, the Unified IP IVR associated with that particular Unified CM will fail-over to the
second Unified CM.
Manager service on different Unified CM subscribers in the cluster for high availability. Using the
redundancy feature of the JTAPI subsystem in the Unified IP IVR server, you can implement redundancy
by adding the IP addresses or host names of two Unified CMs from the cluster. Then, if one of the
Unified CMs fails, the Unified IP IVR associated with that particular Unified CM will fail-over to the
second Unified CM.
Figure 3-8
High Availability with Two Unified IP IVR Servers and One Unified CM Cluster
TDM
access
76606
Publisher
Sub 1
Sub 2
Unified CM
cluster
MDF
switch 1
Call control, CTI data,
IP messaging
TDM voice lines
Ethernet lines
IP messaging
TDM voice lines
Ethernet lines
Public
network
V
M
IDF
switch 1
IDF
switch 2
V
Voice
gateway 1
Voice
gateway 2
T1 lines
M
M
MDF
switch 2
switch 2
T1 lines
IP IVR 1 IP IVR 2
IP IVR group