Cisco Cisco Customer Voice Portal 8.0(1)

In this call flow model, both the Voice Gateway and the Call Server see two call legs for the
same call:

•

One for the Switch leg.

•

One for the VRU leg.

For the Switch leg, the Gateway simply provides Gateway capabilities from TDM to VoIP and
call-switching capabilities. For the VRU leg, the Gateway provides VRU voice treatment.

• Although the following figures show two Gateways (one where the call arrives and a separate

one for the VRU leg), these could be the same physical Gateway.

• For simplicity, the figures do not illustrate a call flow model for redundancy and failover.

The following figure shows the call flow for this call flow model using SIP without a Proxy
Server.

Note: In the following diagrams, solid lines indicate voice paths and dashed lines indicate
signaling paths.

Figure 12: Unified CVP Comprehensive with SIP without Proxy Server, Unified ICME

The following figure shows the call flow for this call flow model using SIP with a Proxy Server.

Configuration and Administration Guide for Cisco Unified Customer Voice Portal Release 4.1(1)