If necessary a 1:1 transformer on the voice lines might clean your audio up for you. One transformer on each line.
On 10/6/07, Mark Bell <[EMAIL PROTECTED]> wrote: > > Hey guys, > > > > I am trying to diagnose a hum in my FXO lines > > I am using an Adtran 750 with 8 FXO ports. I am getting a pretty bad hum > on the line during a call. > > I have checked the Telco side of the 66 block and there is no hum there so > it's my problem to fix. > > I have tried to lower the gain but that reduces the call volume to much. > > Where else should I be looking? > > > > Setup as follows > > Dell PE1950 server > > Redfone Quad port fonebridge2 > > Asterisk 1.2.18 > > Zaptel 1.2.18 From redfone > > Adtran 750 Channel Bank with 8 FXO and 16 FXS > > Two PRI connections to fonebridge > > > > > > > > TIA > > Mark > > > > > > > > _______________________________________________ > --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 >
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