I had a problem with an intermittent loud buzzing on my X100P (heard when accessing PSTN from my SIP and Zap clients). The problem went away when I physically moved the card down a PCI slot (further away from my TDM400P and my power supply).
I also had an additional problem with jittery/choppy sound when receiving calls from PSTN on SIP devices. This was due to my X100P sharing interrupts with other devices (e.g. NIC).
Cheers Ryan
On 5-Apr-04, at 12:41 PM, Scott Laird wrote:
I have an intermittent problem with the one FXS line that I have. On most calls, the first ~5 seconds of the call has a loud buzzing noise on the line. After 5 seconds or so, it fades off to nothing, and the sound quality is great. Searching for "buzzing" on the list doesn't give a whole lot to work with. The buzzing happens on calls that are routed over both my FXO line and IAX to NuFone, so I'm pretty sure that it's happening on the FXS end.
Here's that chunk of zapata.conf:
context=inside-analog signalling=fxo_ks callwaiting=yes callwaitingcallerid=yes cancallforward=yes callreturn=yes threewaycalling=yes transfer=yes echocancel=yes echocancelwhenbridged=yes relaxdtmf=yes rxgain=1.5 txgain=0 immediate=no musiconhold=yes usecallerid=yes callerid="Analog Phone" <2201> mailbox=2201 channel => 2
Does anyone have any suggestions on where to start looking?
Scott
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