A PC connected to a Griffin imic worked very well with my previous CCM 4.2 cluster , the PC played back mp3 songs to a high quality. Now I have upgraded the cluster to CUCM 7.1 and forced to use moh-usb-audio, the quality has diminished. There is a definite background hiss, even when the iPOD / PC is not plugged in and the song itself has a poor quality sound.
I have tried with different mp3 / wav formats and I have played around with the settings within the services > Cisco IP Voice Media Streaming App, such as:
1. MOH Fixed Audio Quality level
3. volume levels
The reason for not using the internal CCM MOH service was because of the poor quality the songs had after they were converted to g711.
Do I have to use the "Cisco" MOH-USB-AUDIO device or are there alternatives, has anyone got the Griffin working on CUCM 7?