I have been getting disconnects on my pots lines from bellsouth recently. The BS repairman determined that their was an audible 60 HZ hum on all of my fxo ports. We also measured the following impedances between tip and ring: T-R 35K ohms R-R 90K ohms T-T 16K ohms The two latter measurements were between ports. The bellsouth tech kept saying we had a short, I had to get him to put his meater on the lines and read the impedances. My guess is that there is a bad capacitor in the zhone. Does anyone have any experience with the zplex-10 and what are the typical impedances and DC characteristics? Is there any problem with opening them up and replacing the components? Thanks, Walker Haddock -- ******** DataCrest, Inc. -- Technically Superior ****************** Walker Haddock http://www.datacrest.com DataCrest, Inc. e-mail: wh@datacrest.com 1634A Montgomery Hwy. phone: 1-888-941-3282, 1-205-335-8589 Birmingham, AL 35216 fax: 1-205-823-7838 ***********************************************************************