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Topic # 58911 23-Mar-2010 11:36
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Many years ago when Telecom first came out with the 128k/128k ADSL plan (JetStart it was called?), I started using ADSL. Sync speed has been very stable until some months ago (perhaps even longer), I start to notice the sync speed becoming unstable. I feel it's time I should do something about this.

My sync speed can fluctuation any where from about 1Mbps to the max speed ADSL1 can allow. I have a Dynalink RTA770W, it's quite old, but it has been serving me well. What confuses me is that the noise margin seems to increase linearly in the opposite direction of the sync speed. From that, it looks like the noise level is at normal level, but the router for some reason decides to sync at lower speed.

Only one of the phones in the house shares the same connection with the router. The phone of course goes through a filter. As I have requested a splitter to be installed when ADSL was first setup for me many years ago, I have not used filters for any other phones around the house. Further more, the technician who did the wiring told me I have two separate phone lines (I used to have two numbers), so he connected the router to the second phone line (if I understood him correctly).

If at all relevant, I used to have Sky installed, but have terminated it some time ago. The sync speed still fluctuates from time to time. Is this an indication of poor line quality, bad router or something else?



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  Reply # 310147 23-Mar-2010 11:48
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The sync stat table keeps losing its format, however it looks perfectly fine in preview. I tried to upload screenshots instead, but the post doesn't seem to update. Now I can't even edit it anymore...

 





 

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  Reply # 310151 23-Mar-2010 11:52
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I think it's something you'll have to fix via trial and error. First of all, try another modem! A bit of a pain-in-the-butt I'm sure, but maybe a kind soul here will loan you one? I would, but I don't have a spare.




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  Reply # 310908 24-Mar-2010 18:29
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siyuan:

Only one of the phones in the house shares the same connection with the router. The phone of course goes through a filter. As I have requested a splitter to be installed when ADSL was first setup for me many years ago, I have not used filters for any other phones around the house. Further more, the technician who did the wiring told me I have two separate phone lines (I used to have two numbers), so he connected the router to the second phone line (if I understood him correctly).



1:  If you have a master splitter/filter installed where the line comes into the house, one jack should be the dedicated ADSL jack, you should not have a phone plugged into this jack at all just the modem.

I don't think the phone should work when plugged into a properly split off ADSL only jackpoint. 

Are you sure you have a master splitter/filter installed?  If not you need filters for any phone/landline devices in other jack points around the house.

Do you have an alarm, is it connected to the phone wiring?

2:  Check your address on this site:
http://www.telecomwholesale.co.nz/maps

Are you connected to an exchange or cabinet that has ADSL2+ enabled?  If so you should get a new modem/router that supports ADSL2+.

The Dynalink RTA1025W or WE would probably suit you, they are ~$120
http://www.gearbot.co.nz/store_products/search/dynalink%20rta1025/

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  Reply # 310914 24-Mar-2010 18:39
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Actually if you are with Telecom/Xtra as your ISP?

If yes, you could take them up on their free modem upgrade offer. They offer a free single pc modem if you accept being locked into a 12 month contract, or a multi port wireless modem if you accept a 24month contract.

See here:
http://telecom.co.nz/modemoffer

If you are with a different ISP ignore the above OR if you don't want to be in a contract just get the Dynalink I mentioned earlier

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