Voice frequency attenuation: Generator 600R - Micro filter - Level Meter (600R) 300 a 3400Hz between -1dB and 1dB Cutoff frequency: Generator 600R -Micro filter - Level Meter (600R) 4 a 7kHz Loss return 600R: 1 Micro filter and 3 Micro filter parallel 300 a 500 Hz <-14dB 500 a 2000Hz < -18dB 2000 a 3400 < -24dB ADSL frequency attenuation: Generator 100R Midrofilter Level Meter 100R 30kHz a 1.1MHz >-30dB Loss insertion: Voice frequency 300 a 3400kHz < -0,8dB Geneator (600R) Level Meter 600R Micro filter open or 600R Adsl frequency 1 Micro filter 30kHz a 1,1MHz <- 0, 2dB Generator (100R) - Level Meter 600 R Micro filter open or 100R ADSL frequency 3 Micro filter 30kHz a 1,1MHz < - 0, 6dB Generator (100R) - Level Meter 600 R Micro filter open or 100R