[asterisk-users] Issue playing high quality white noise

[asteriskusers at dovid.net]

Hi,

I have a client that wants a phone system that will play sounds from a  
sleep machine. I tried using all different formats (GSM, WAV, WV49,  
MP3 etc.). Over SIP it was OK however with the PSTN it broke up from  
time to time. I assume this has to do with the fact that the PSTN is  
limited to 8khz. Is there something I am missing here or is this  
simply a limitation of the PSTN?

Regards,

Dovid