Core Issue
The issue usually occurs when the Nuance Speech Server, the Cisco Customer Response Applications (CRA) server, the Gateway or the network is operating under a heavy load.
Resolution
To resolve this issue, perform these steps:
- Identify and correct any network problems.
- If you are using VoiceXML, you can work around this problem by performing these steps:
- Reduce the complexity of the grammars used in the VoiceXML application.
- Remove the reference to Document Type Definition (DTD) in the VoiceXML application.
- Use local .wav, grammar and VoiceXML files instead of files on another server.
For more information about resolving Cisco CRA and Customer Response Solutions (CRS), refer to these documents:
Customer Response Solution (CRS) Version
CRS 3.5
Customer Response Solution (CRS) Applications
Autoattendant (AA), Text-to-speech (TTS) or Automatic speech recognition (ASR)
Nuance Functions
Nuance TTS server
Nuance TTS subsystem