[asterisk-users] Loud noise instead of MOH

[Mauro Zanin]

Hi Everybody,
I'm experiencing this kind of issue.
One ASTERISK 1.2.17 is connected to a Bristuffed HFC single ISDN channel 
card. Everything seems to work but sometimes the third party caller when 
listening to MOH listens some "SSHHHHH!" instead of MOH, this is not 
continuos, MOH plays ok for, say, 20 seconds then the sound and then another 
30 seconds of good MOH.
We have some SIP phones for extensions (Grandstream 496 ATA and One 
SPX2000).
Sometimes also ATAs hung, not really got ATAs at all.

Does Anybody have some hint?

Ciao a tutti
Mauro

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