dslgr
join:2008-05-07
| reply to DesiGuy1981
Re: SpeedTouch 516 Tweaking :)
@DesiGuy1981 apparently, there was no positive outcome from the changes you've made with DMT. Unfortunately, it is a tough situation, taking into account the very high attenuation your line has, but I understand your efforts to get the max out of it.
The only thing I can think of, is to ask from your ISP if they can increase the Remote Tx Power, from their side. Doing so will give you another boost for sure, considering that there should be at least another 4dbm room for increase (in order to reach 19dbm in total). |
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DesiGuy1981
join:2008-05-01
Scarborough, ON
edit:
May 9th, @06:08PM
| thans dslgr..ill call my ISP and ask em to increase TX power..im not too sure if they wud do anything...when i complained about the speed..they said theres nothing they can do..but if i want i can cancel the account with no charge...apparently i signed a contract with emf or a year..
thanx aagin..and yes i wish too that u can do some test for my line..lol
UPDATE: The primus tech support does not even know about Remote tx power. so they cudnt help. |
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Bicephale
join:2005-09-24 | Remote Transmit Power is 20 dB or so when the line is
fine, it's negociated to a lower value because there's
a bottleneck located somewhere on the line, i believe. |
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dslgr
join:2008-05-07
edit:
May 11th, @12:11PM
| If DesiGuy1981's modem readings are correct (which we can't take for granted), then my guess is that the Remote Tx Power is lower than it should, due to misconfigured power profile at the CO DSLAM (you also use the word exchange for it if I'm not mistaken?) or bad ISP network topology.
There's a reason PSD (Power Spectrum Density) masks are being applied and that is mainly to reduce crosstalk among lines in the same bundle.
If all things worked as they should then, by ADSL-standard definition, the Maximum Nominal Aggregate Transmit Power for the Downstream is, as you correctly said, 20dbm and for the Upstream 13dbm.
That means that in a properly configured providers network, for DesiGuy1981's case, there should be room for a signal power increase, leading to an increased downstream rate. But unfortunately, as it seems, since the call has already been made, that's not the case here.  |
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