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
Haven't seen this, but I do hear a loud click about 5 seconds into any call involving a TDM400P port. Seems like something might not be quite right with the Zap driver. -brian> -----Original Message----- > From: asterisk-users-admin@lists.digium.com > [mailto:asterisk-users-admin@lists.digium.com] On Behalf Of > Scott Laird > Sent: Monday, April 05, 2004 1:42 PM > To: asterisk-users@lists.digium.com > Subject: [Asterisk-Users] Buzzing on TDM400P FXS? > > 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 > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
I had slightly different problems - but the resolutions might help you: 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 > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
Had a similar problem What kind of phone are you using on that line? My case, the line was sharing a Palm modem on it. Electrical noise from the power strip was causing the problem. Also when My cell phone was too close to the phone, same problem Also found the VMWI logic was not working well with the PALM modem and took the mailbox off that line --- Scott Laird <scott@sigkill.org> 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 > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users> To UNSUBSCRIBE or update options visit: >http://lists.digium.com/mailman/listinfo/asterisk-users __________________________________ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/