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Author Topic: Higher upstream rate with 0-6 tones disabled  (Read 1611 times)

konrado5

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Higher upstream rate with 0-6 tones disabled
« on: October 04, 2014, 02:57:21 PM »
I've noticed about 30 kbps higher upstream rate if I disable 0-6 tones which are not used whenever. My SNR margin is  nearer to target SNR margin. I often see upstream SNR margin 6.1 dB when I disable these tones. If I have 0-6 tones enabled, I have often SNR margin for upstream 6.8 dB immediately after the synchronization establishment.

Has someone similar observations?

Best regards
konrado5
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konrado5

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Re: Higher upstream rate with 0-6 tones disabled
« Reply #1 on: October 13, 2014, 11:04:58 PM »
I've noticed the same effect occurs when I disable only 6th tone (without disabling 0-5). It is strange, 6th tone is always not bit-loaded, however disabling it on the router slightly raises synchronization rate. Similar effect is noticable also on the other circuit.
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mastahhh

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Re: Higher upstream rate with 0-6 tones disabled
« Reply #2 on: October 14, 2014, 11:49:00 AM »
Quote from: konrado5 on October 04, 2014, 02:57:21 PM
Has someone similar observations?

The same problem exists on my line  :(
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