Error on recordutterance with Nuance speech server

A VoiceXML application cannot record caller audio input.

The following error is logged in the Blueworx Voice Response VRBE log: error fetching waveform: Waveform fetcher: Socket I/O problem: A remote host refused an attempted connect operation.

The cause of the problem is that by default, Nuance speech server uses port 90 for the URL of the recorded utterance. This setup does not match the default setting of most HTTP servers. Customer should check the Nuance speech server Installation and User's Guide for the "Waveform-logging resources" to ensure the matching TCP port setup.