Cisco Cisco E-Mail Manager Unity Integration Option Dépliant
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Cisco Unified Contact Center Enterprise 7.5 SRND
Chapter 2 Deployment Models
IPT: Clustering Over the WAN
Best Practices
•
Distributed gateways require minimal additional remote maintenance and administration over
centralized gateways.
centralized gateways.
•
The media server for Unified CVP may be centrally located or located at the agent site. Media may
also be run from gateway flash. Locating the media server at the agent site reduces bandwidth
requirements but adds to the server count and maintenance costs due to an additional server.
also be run from gateway flash. Locating the media server at the agent site reduces bandwidth
requirements but adds to the server count and maintenance costs due to an additional server.
Site-to-Site Unified ICM Private Communications Options
Unified ICM private communications must travel on a separate path from the public communications
between Unified ICM components. There are two options for achieving this path separation: dual and
single links.
between Unified ICM components. There are two options for achieving this path separation: dual and
single links.
Unified ICM Central Controller Private and Unified CM PG Private Across Dual Links
Dual links, shown in
, separate Unified ICM Central Controller Private traffic from
VRU/CM PG Private traffic.
Figure 2-19
Unified ICM Central Controller Private and Unified CM PG Private Across Dual Links
Advantages
•
Failure of one link does not cause both the Unified ICM Central Controller and PG to enter simplex
mode, thus reducing the possibility of an outage due to a double failure.
mode, thus reducing the possibility of an outage due to a double failure.
•
The QoS configuration is limited to two classifications across each link, therefore links are simpler
to configure and maintain.
to configure and maintain.
•
Resizing or alterations of the deployment model and call flow might affect only one link, thus
reducing the QoS and sizing changes needed to ensure proper functionality.
reducing the QoS and sizing changes needed to ensure proper functionality.
•
Unanticipated changes to the call flow or configuration (including misconfiguration) are less likely
to cause issues across separate private links.
to cause issues across separate private links.
Best Practices
•
Cisco recommends separate links across separate dedicated circuits. The links, however, do not have
to be redundant and must not fail-over to each other.
to be redundant and must not fail-over to each other.
•
Link sizing and configuration must be examined before any major change to call load, call flow, or
deployment configuration
deployment configuration
Site 1
Site 2
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PG A
ICM A
PG B
ICM B