Cisco Cisco Unified Customer Voice Portal 10.5(1)

Figure 6: Standalone VoiceXML Call Flow

1. New call is passed from PSTN to VXML Gateway.

2. VXML Gateway passes HTTP request to VoiceXML Server.

3. VoiceXML Server passes VXML document to VXML Gateway.

4. VXML Gateway executes appropriate script; passes HTTP request to VoiceXML Server.

5. VoiceXML Server passes VXML document to VXML Gateway.

6. VXML Gateway executes appropriate script; passes HTTP request to VoiceXML Server.

7. VoiceXML Server passes Request ICM Label for new call to ICM Service using internal

message bus (see the discussion in "Special Considerations for Standalone Models with
ICM Lookup" just below).

8. ICM Service passes Request ICM Label for new call to Unified ICME; an ICM routing

script is invoked.

9. Unified ICME passes connect label to ICM Service.

10. ICM Service passes label to VoiceXML Server.

11. VoiceXML Server passes transfer request based on label to VXML Gateway.

12. VXML Gateway establishes audio connection with Cisco Unified CallManager.

13. Unified CallManager informs Unified ICME that call was received by agent.

In Standalone call flow models, with and without ICM Lookup capability, various combinations
of VoiceXML Server and Reporting Server are possible. ICM Lookup capability requires a
connection hub that both the VoiceXML Server and the Unified ICME VRU PIM (Peripheral

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