[cisco-voip] MoH - Sound Quality

[Simon Jones]

Hi,

 

Has anyone experienced this issue before? I have been tasked with
updating our existing MoH (currently classical music). I place the audio
files to be converted into the relevant directory in CCM and the files
are converted with no errors.

 

When listening to the new audio source I have created it sounds fine
when I am put on hold from  an internal IP Phone, analogue/POTS line at
home. However when I call from a mobile/cell phone and put myself on
hold the sound quality is very poor - a lot of background noise/hiss. I
have tried call from mobile phones on alternate networks and they all
have the same quailty problem. 

 

CCM 4.1(3) ES110

Product : Cisco Catalyst 6000 E1 VoIP Gateway

Device Protocol: Digital Access PRI

 

I have also tried a variety of music styles and also experimented with
the original file being in MP3 or WAV format, but still get this same
issue.

 

Any thoughts as to what could be the cause or hopefully the solution to
this issue?

 

 

Many Thanks,

 

Simon



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