I have a 406V2 Ip Office with a digital 16 and a trunk 16 module all on V4.0
After a few hours, and now minutes, all external calls in and out are very tinny sounding and there is a high pitched whine in the background. This happend on all 11 lines connected. This is the second location this has happened. Swapping the ATM16 at the first job fixed it. There is grounding to all three cabs to a real ground. (common)
Is there something I am missing or does anything need to be tweaked in the analog line settings tab re attenuation or something else? A proper reboot with the modules first then the 406V2 did not rectify either. Thanks. -Jim
After a few hours, and now minutes, all external calls in and out are very tinny sounding and there is a high pitched whine in the background. This happend on all 11 lines connected. This is the second location this has happened. Swapping the ATM16 at the first job fixed it. There is grounding to all three cabs to a real ground. (common)
Is there something I am missing or does anything need to be tweaked in the analog line settings tab re attenuation or something else? A proper reboot with the modules first then the 406V2 did not rectify either. Thanks. -Jim