Configuring a prompt recording script in UCCX requires the Codec G711ulaw be used. As of version 10.6 this is the only supported codec for recording prompts. Typically this was not an issue as the Regions determines the codec used and always prioritised G711ulaw above G711alaw. However with the later versions of CUCM, the Regions configuration menu now includes the ability to preference codecs. So one could give the G711alaw codec a higher preference above the G711ulaw codec. What this means is when you call into the UCCX System, you will still hear all the prompts, however if you attempt to record a prompt using a prompt recording script, the system will record the prompt in G711alaw. All indicators will point to a successful recording, however when looking in the Prompt Directory on the UCCX Server, the wav file is only 0.6KB in size. This file contains no audio.

Ensure the codec negotiated is G711ulaw when recording prompts on UCCX.