Cisco Cisco Unified Customer Voice Portal 10.0(1)

CSS is an optional device, but it comes highly recommended. Without it, the IVR Service
implements a "poor man’s failover" mechanism for up to two of each of the above components,
but they are not load balanced, and various retries and delays are part of the algorithm—all of
which is avoided if CSS is used.

The CSS is normally deployed as a Virtual Router Redundancy Protocol (VRRP) pair. It is
useful in all deployment models except for Call Director call flows.

Network Monitor

An SNMP management station that can be used to monitor the solution deployment's health.

Prerequisite Tasks

At this point we have presented some of Unified Customer Voice Portal's features, mentioned
that there are various deployment models, presented a typical call flow, and discussed the major
components of a Unified CVP solution.

This section indicates tasks that must be performed, or decisions that must be made, before
purchasing and deploying a Unified CVP solution. These should be kept in mind when reading
the rest of this manual.

•

Choose a Deployment model.

–

Choose a Call Flow model.

–

Choose a Geographic model.

–

Choose a Physical model.

•

Work out the network topology for your system, including addresses and names of the solution
components.

•

Determine a failover strategy for all the components of your Unified CVP solution.

•

In non-SIP environments, determine your strategy for inbound call routing (that is, dial peers
versus Gatekeeper).

•

Decide on a naming resolution system for Gateways (DNS versus configured on the Gateway).

•

If using a VRU other than Unified CVP, determine the VRU trunk group number and number
of trunks.

•

If ASR and/or TTS are part of your solution, determine the locale values to be used.

•

Decide whether the same set of VRUs are to be used for all cases, or whether that will be
determined separately for each customer (dialed number).

Note: If all dialed numbers will use the same VRUs, it is easiest to use a default Network
VRU, rather than to configure multiple Network VRUs. For more information, see the

Planning Guide for Cisco Unified Customer Voice Portal 4.0(1)