My configuration is simple as below. SIP phone <-> asterisk <-> CISCO <-> T1
Do you mean the hum noise is created by electric-magnetic field? Asterisk can do nothing to eliminate it? On Sun, Mar 29, 2009 at 2:47 AM, Steve Edwards <asterisk....@sedwards.com> wrote: > On Sat, 28 Mar 2009, Rilawich Ango wrote: > >> We are experiencing the hum noise when the conversion of 2 parties is >> established. How can we eliminate that noise? ango > > It depends on the source :) > > What computer, what type of connection (Zap (I'm a 1.2 Druid), SIP, IAX), > what interface hardware (none, t100p, etc.)? Anything else like "the > channel bank sits atop the isolation transformer for the entire building?" > > I built an Asterisk server out of an old Fiire Station. It's Via micro-atx > in a "shoe-box" and a tdm400. Having everything crammed into such a small > space put the horizontally mounted tdm card millimeters above the CPU. The > noise during "dialtone" was so bad I scrapped the project there and then. > > Thanks in advance, > ------------------------------------------------------------------------ > Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST > Newline Fax: +1-760-731-3000 > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users