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This patch makes possible to tweak the downstream SNR margin on Lantiq DSL devices. The UCI parameter 'network.dsl.ds_snr_offset' is used to set the SNR margin offset. It accepts values in range -50 to +50 in 0.1 dB units. The SNR margin can thus be modified in range -5.0 to +5.0 dB in 0.1 dB steps. Currently this should only affect ADSL (not VDSL). It should be very easy to make this work also on VDSL lines, but since I couldn't test on VDSL lines this patch does not do that yet. I have also a patch for LUCI about this, that I could submit. Tested on FB3370 (Lantiq VR9) and Telecom Italia ADSL2+ line. Signed-off-by: Andrea Merello <andrea.merello@gmail.com> |
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