Text-to-Speech output is not heard

If TTS output does not play in an application, use the following procedure to investigate the problem.

To investigate the problem:

1. Check for allocation errors (TTS008) in the error log.

   This error indicates that a request for a TTS resource was denied, and the associated TTS will not be heard. This error occurs when there are no TTS resources in service. Either there are not enough TTS resources administered for the application or the resource is temporarily out of service because the connection dropped. In either case, consider adding more TTS ports on the Avaya Interactive Response.

2. Run a trace of the application and/or the Avaya Interactive Response VROP process.
3. MRCP errors (called status codes or completion causes) are logged in the VROP trace and are reported to an application. At the highest trace level (5), the VROP trace will show all MRCP messages exchanged. A SPEAK request will contain the TTS intended for play and the corresponding SPEAK-COMPLETE from the server will contain the status code or completion cause for that request.

   Interpret the trace results using the MRCP specification and by consulting with the MRCP server vendor as needed.

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