Cisco Cisco Unified Customer Voice Portal 10.5(1)
D-9
Cisco Customer Voice Portal (CVP) Release 3.0(0) Configuration and Administration Guide
Appendix D Configuring Cisco Content Services Switch (CSS) for Use with CVP
ASR/TTS Server Configuration
For a CSS implementation, the host name embedded within the bootstrap document is “cvp-vxml”. You
must ensure that the host name isn-vxml is set to resolve to the virtual ip address of the content rule for
the application servers setup on CSS. This is configured within each voice gateway using the command:
must ensure that the host name isn-vxml is set to resolve to the virtual ip address of the content rule for
the application servers setup on CSS. This is configured within each voice gateway using the command:
ip host cvpserver 10.86.130.90
where 10.86.130.90 is the VIP address servicing the Application Server content rule.
ASR/TTS Server Configuration
If your CVP deployment includes the use of ASR/TTS resources for call processing, the ASR/TTS
servers must also be configured within CSS. If your ASR/TTS deployment utilizes a multi-tier
architecture to separate MRCP requests from recognition and vocalizer functions (such as a multi-tier
Nuance configuration), only the MRCP servers are load-balanced by CSS. The RTSP traffic generated
as part of MRCP will be routed around CSS, rather than through it. While this is generally handled by
default within MRCP, it may be necessary in some MRCP configurations to specifically instruct the
server to pass the RTSP address. Consult your ASR/TTS documentation for specific details.
servers must also be configured within CSS. If your ASR/TTS deployment utilizes a multi-tier
architecture to separate MRCP requests from recognition and vocalizer functions (such as a multi-tier
Nuance configuration), only the MRCP servers are load-balanced by CSS. The RTSP traffic generated
as part of MRCP will be routed around CSS, rather than through it. While this is generally handled by
default within MRCP, it may be necessary in some MRCP configurations to specifically instruct the
server to pass the RTSP address. Consult your ASR/TTS documentation for specific details.
Note
When using ASR/TTS services with the CSS, you must enable the following global command on the
CSS. This prevents the CSS from tearing down the mrcp connection after some period of time:
CSS. This prevents the CSS from tearing down the mrcp connection after some period of time:
flow permanent port1 554
In order to route the voice stream around CSS rather than through it, you need to configure the mrcpclient
rtpsetup enable on the Gateway.
rtpsetup enable on the Gateway.
To configure the MRCP client RTP setup enable
Step 1
Login to the Gateway and enter your password.
Step 2
Type enable and enter your password.
Step 3
Type conf t.
Step 4
Type mrcpclient rtpsetup enable.
In this example, one set of MRCP servers handles both the ASR and TTS needs.
However, since CVP breaks out the ASR and TTS resource host names, it may be desirable to separate
MRCP server groups by specific function. If separate MRCP servers are used for ASR and TTS
resources, define the ASR and TTS CSS components (service, rule, groups) separately. (See the
MRCP server groups by specific function. If separate MRCP servers are used for ASR and TTS
resources, define the ASR and TTS CSS components (service, rule, groups) separately. (See the
section below.)
Note
If using Nuance recognizers, the following must be added to the <install-dir>\mrcp\mrcp-config file:
mrcp.SendRtspDestination TRUE
mrcp.SendRtspDestination TRUE
Service
Configure one Service per ASR/TTS Server responsible for handling MRCP requests.
The following three services represent MRCP ASR / TTS.