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Standard User rarrar
(member) Fri 03-Jul-15 19:35:42
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SNRM glitches on phone use FTTC


[link to this post]
 
Whenever I make or receive a phone call the upstream SNR Margin plot shows a momentary drop of a few dB at the beginning and end of the call when I pick up and put down the receiver.
Same results with several phones, different extensions, only 1 phone in at a time...
Extra filter make no difference.
Chart below shows SNR Margin on DSLstats with 10 sec sampling period.
Is this something I should try to investigate further or is it external and "not unusual".
( Step increase in SNRM on chart on upload is just reversing the step drop in SNRM I get everyday about 10:00 !)

[IMG]http://i59.tinypic.com/6oz91d.jpg[/IMG]

Small glitches can sometimes be seen on downstream SNRM

Modem/router is Billion 8800NL
Standard User Zarjaz
(eat-sleep-adslguide) Fri 03-Jul-15 20:14:24
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Re: SNRM glitches on phone use FTTC


[re: rarrar] [link to this post]
 
I think the first question should be ... what problem is this actually causing you ?

Standard User rarrar
(member) Fri 03-Jul-15 21:42:38
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Re: SNRM glitches on phone use FTTC


[re: Zarjaz] [link to this post]
 
None of course , just curious !
It may have always happened on this line - but have recently started using DSLstats to monitor the steady drop in SNRM since FTTC enabled a few months ago ( 14 dB drop up and down) and noticed these glitches.


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