Noise on the Line

Hi All,
Here are my line stats from the Hub 3
ADSL Line Status
Connection information
Line state:
Connected
Connection time:
0 day, 00:36:28
Downstream:
3,744 Kbps
Upstream:
448 Kbps
ADSL settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.1 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
9.6 dB / 24.0 dB
Line attenuation (Down/Up):
36.5 dB / 22.0 dB
Output power (Down/Up):
19.8 dBm / 11.9 dBm
FEC Events (Down/Up):
182 / 0
CRC Events (Down/Up):
9 / 0
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
Loss of Link (Remote):
0
HEC Errors (Down/Up):
51 / 0
Error Seconds (Local/Remote):
0 / 0
My question is the noise margin and line attenuation right for my line. I live in the middle of no where pretty much and The line length is about 3.5 KM to the exchange.
Hope someone can help. All I want to really check is that I am getting the maximum possible speed my line can handle.
Thank you and Happy New Year

It's your line attenuation .... its distance erosion from the exchange ... it's length.
I could give you the "purist" view, that at 36.5 db loop loss, you should have around IP 6.5M at target margin with excellent bitloading and running fastpath.
What that means is everything is perfect .... and rarely happens with line adaptive DSL.
So yours is on interleave, normal for some line errors, it's at 9db margin, so you lose a little more linespeed.
And if bitloading is average as well .... it all adds up .... BUT
What you can do, and I noticed you had a shortish runtime which meant you reset the router in darkness ....
Is do ONE reset in daylight hours tomorrow between 9 and 12, and your sync speed may improve, and then wait for the IP profile to come up to it .... that takes 72 hours.
Try that first .... see what happens, if you want to get the margin down to 6db, read about noise margins and line noise .... and how to get rid of it.
See what tomorrow brings ....

Similar Messages

What does noise of the line mean?

What's noise on the line mean and how do you know if you have got it?

soapy is part right. Audible noise is easy to identify and indicates a problem with the line; and is likely to be associated with high frequency noise. What actually matters for broadband is the high frequency noise; which you can't hear. It is very difficult (impossible?) to detect without special equipment. You may be able to guess that it is there either from audible noise, or from the behaviour of your broadband.
You will have difficulty deducing much from the behaviour of your broadband unless you use an unlocked modem.

Noise on phone line and broadband cutting out when...

Hi, I have been experiencing a problem with my broadband dropping out when the phone is in use. I have also had a very crackly/noisy line whilst using the phone.
After reading various problems on these forums (some sound similar) I wanted to see if anyone else could help as I’m still unsure what to do next. I haven’t really had much help out of BT except for them sending out a new Hub (V3) saying that it should fix the problem. It did not fix it and I have since had a few more conversations, which have resulted each time in BT saying that there is no fault on the line, and it will be £130 minimum call out for any further action.
I have done everything I can think of in the house to see if the problem was to do with my household wiring including replacing the wiring for my extension. The filters have all been replaced and I have also used the quiet line facility and there is still noise on the line and the broadband still drops out when the phone is used.
At the moment I really have no clue what to do next so thought if I post up my ADSL line status results that maybe someone would see a problem or maybe have a thought on what to try next as I don't really want to be paying £130.
My set up is BT HomeHub 3 (option 3) with a BT Vison Box. The problem with the broadband dropping out seems to have started around the time I was notified by email that there was an upgrade on the network completion that was on the 24th June.
Any help would be very much appreciated as this is understandably getting a very tiresome. Cheers in advance.
My ADSL line status:
Connection Information
Line state:
Connected
Data Transmitted/Received (GB):
4.3 / 4.3
Downstream:
4.438 Mbps
Upstream:
1.129 Mbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
13.2 dB / 5.9 dB
Line attenuation (Down/Up):
25.3 dB / 14.5 dB
Output power (Down/Up):
18.3 dBm / 12.6 dBm
FEC Events (Down/Up):
0 / 229
CRC Events (Down/Up):
0 / 85
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
0 / 7
Error Seconds (Local/Remote):
60 / 25

One thing to add, are you sure on how they phrased the info regarding to the £130 charge. That should only really be applied if it is YOUR equipment that is at fault (and on some occassions if you have damaged the external line).
I have what sounds to be a much more intermittent issue than yours, the vast bulk of my visits have resulting in the engineer not finding an issue (occassionally they do but then seem to lose that info before the next one) and I have never been charged since there is no issue with my equipment and the effect on the broadband can be seen via BT's own logging (ie speed reductions etc).
There has been some reports that sound like inappropriate charging but really you have an obvious line issue and even if intermittent should not be chaged providing you have confirmed it is an external cause.
If my post was helpful then please click on the Ratings star on the left-hand side If the the reply answers your question fully then please select ’Mark as Accepted Solution’

Possible fault on the line

Hi,
Hoping somebody on here can help before I pull all my hair out. Firstly, I have been having this issue since I moved into a rented house on 20th November 2012. Basically a LOT of noise on the line and a broadband connection of 0.13mb.
After going through the motions, with multiple times of IP profile resetting and having to wait 10 days for stabilisation periods and replacement of Microfilters and routers, the IP profile would ALWAYS decrease and the connection would settle on 0.13mb speed.
I eventually managed to persuade second line support to send out an engineer on Wednesday. He fiddled about with the line going to my house and replaced the master socket. He also rang up to reset IP profile etc.
He told me that there is no reason why I shouldn't get 2mb-3mb. It did all start swimmingly, with an average noise on the line of 6db (the engineer told me that 9db would probably be the norm as I am around 3km from the exchange).
Over the last couple of days, I have been keeping an eye on noise levels, speed, and the IP profile. The noise level has increased dramatically to 19db! The IP profile has dropped to 1mb and I am getting a speed of around 0.9mb.
Now my question is, is this due to the stabilisation of the line. Is the IP profile able to increase of its own free will or will it only get lower, plus will my noise levels go down? It's getting annoyingly frustrating. I am a web developer so need the internet at decentish speeds in order to work overtime for my company.
I've copied my ADSL settings for you to have a look at anyway. Any advice would be amazingly appreciated. I really don't want to wait another 8 days only for me to be in exactly the same situation again!
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.1 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
19.0 dB / 21.0 dB
Line attenuation (Down/Up):
51.0 dB / 31.5 dB
Output power (Down/Up):
17.4 dBm / 12.3 dBm
FEC Events (Down/Up):
93116 / 2
CRC Events (Down/Up):
168 / 3

Also please find the FULL Router information
Connection Information
Line state:
Connected
Connection time:
3 days, 01:32:51
Downstream:
1.188 Mbps
Upstream:
448 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
Unknown or no mode configured
Latency type:
Interleaved
Noise margin (Down/Up):
18.3 dB / 21.0 dB
Line attenuation (Down/Up):
51.0 dB / 31.5 dB
Output power (Down/Up):
17.4 dBm / 12.3 dBm
FEC Events (Down/Up):
93261 / 2
CRC Events (Down/Up):
168 / 3
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
278 / 1
Error Seconds (Local/Remote):
10679 / 6785

ADSL problems - Slow - Noise on phone line

Hi, Im hoping someone can help me with Broadband issues I've been having. Ill try and describe the salient points without turning into a rant. Suffice to say Ive had a torrid time over 2 weeks, spending hours on the phone to maybe 15+ different call centre staff and relaying information back and forth between them and 3 different engineers.
Ive recently moved house and about a month before the move I arranged for an 8Mb ADSL connection to be ready for me when we moved in. I was assured that I would definitely have service on this date which was important to me as I am a self employed web designer and rely on an internet connection for my work.
We moved on 11th this month, I plugged the router in and it couldn't connect (orange/purple flashing light on HomeHub 3). After talking to various people at the BT Broadband call centre over a period of a few days, going through basic troubleshooting numerous times it was eventually decided that an engineer be sent. He found the problem relatively quickly, the exchange hadn't been set up for my connection. He set up the connection at the exchange and left with me being able to connect.
I quickly realised that the speeds were very slow (around 0.7Mbps). I left it for 24hrs but no improvement. It also worried me was that I could hear noise on the phone line. The noise is only there when the broad band is connected, a steady fuzzy static. You can also hear the modem on the router dial occasionally like the old school dial up connections. I again phoned the call centre, again went through basic trouble shooting (plugging directly into test socket, different filters, connect computer into router via cable and not wifi etc etc….), and again eventually got another engineer sent.
The new engineer changed my Home Hub 3 for a Home Hub 4, decided nothing else could be wrong at the house end so went to the exchange. He phoned from the exchange explaining that he had sorted the problem (I can’t remember what he said he did as it was beyond my understanding). I was suspicious that the situation hadn’t been resolved though because I still had noise on the line and 24 hrs later I also had my connection drop to 0.13Mbps.
More phoning to call centre folk and eventually engineer no.3 was sent. I have to say he seemed very thorough, changed the master socket (which he told me the previous 2 engineers should have done) and spent a long time doing various tests. It seemed the problem was fixed since after changing the socket there was no noise on the line. The connection eventually recovered after an SNR and IP profile reset to about 2.5Mbps.
The next day though there was again noise on the line. Some crackles at first but later turning into the constant fuzzy noise that I was hearing before. The speed steadily deteriorated everytime the router was re-synching during training and is now 0.97Mbs and I guess on its way down further since the noise is now quite loud. The engineer was kind enough to ring back to check up on the case and when he heard the issue he insisted that it was almost certainly a phone line fault and that I should call 151 to arrange for someone to come out.
Ive spent today being passed to and fro between the phone line department and the broadband department. The broadband department also tell me they think the phone line department should deal with the issue but then the phone line department say there is no problem when they do a remote test so pass me back to the Broadband department. Eventually after speaking to 5 different people today it has been decided that I should have my 4th Broadband Engineer visit me on Monday.
To my limited knowledge and reading on these forums it seems the issue is likely to be a line fault, so it’s frustrating that it’s possible the wrong person might be being sent and the problem will continue.
Any help or advice would be greatly appreciated, as I mention the connection is very important to me.
ADSL Line stats from my Home Hub 4:
Connected Connection time: 0 days, 03:00:05
Downstream: 1.313 Mbps
Upstream: 448 Kbps
BTWholesale Speedtest:
Download speed achieved during the test was - 0.96 Mbps
For your connection, the acceptable range of speeds is 0.2 Mbps-1 Mbps.
Additional Information:
Your DSL Connection Rate :1.34 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)
IP Profile for your line is - 1 Mbps

Obviously you need to get rid of the line noise problem before your internet connection will improve. Normally the advice is to phone 151 and report a phone fault with no mention of broadband. You really now need to wait until monday to see if this engineer visit solves your noise problem
if after the engineer visit there is no improvement then the mods may be able to help
as this is a residential line and is not supposed to be used for business purposes maybe you should consider a business line which gives a better service contract especially as you are self employed
If you like a post, or want to say thanks for a helpful answer, please click on the Ratings star on the left-hand side of the post.
If someone answers your question correctly please let other members know by clicking on ’Mark as Accepted Solution’.

Serial-Buffer overflow without too much incoming data or bursts on the line

My application runs under LabView 5.11 on a W2000 platform.
After a couple of hours trouble-free working, the sub-vi "bytes at serial port" gives out 57351 Bytes. That is 56k + 7Bytes, which is the normal Datablock coming in at the port.
Effect is that the "serial port read-vi" and as result the complete application hangs up.
I have allready found out that this data set does not arrive at the port.
Could this be a problem of LabView 5.11 running under W2000?

I would first urge you to disconnect the cable from the serial port and let it run more than long enough to convince yourself the error goes away or re-occurs.
If you disconnect, and the error still occurs, your port hardware may be bad. Try another port or PC.
If the problem goes away, you could have noise on the line (interference, bad ground, bad conections, excesive long cable, etc, etc) or,
your code is not coming back to read the port often enough. If you think this is the case, read from the port more often or use hardware handshaking.
I would like to know a lot more before saying it is a software in-compatability issue.
Keep us updated,
Ben
(An LOTR fan)
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

When making a phone call, the other end of the line hears a strange dial up sounding noise. Its loud and quite annoying. What do i do?!

Loud screechy noises are heard on the other end of the line when my iphone 4s is in a phone call. It has to be my phone because multiple people and myself have confirmed hearing it. Its sounds like dial-up. BUT REALLY LOUD!

I just replied to a similar post and I'll copy and paste my response here. I was having the same exact issue. Here is my possible fix.
Yesterday I updated the OS to the latest release. Then right after that I called AT&T and they reset my sim card. Or something like that. They did some sort of reset.
I then got in my car and drove around to test the phone. Because that is when the problem is worse. FINALLY they claim to be able to hear me clearly!!!!
I think it was the combination of both the OS update and the sim card reset that fixed it. Hopefully..... It has only been one day but so far so good. I'll update this post if things change.
Try this and let us know if this works for you.

Why is there so much noise on the discrete lines of my PXI-7831-R?

Good day!
We are attempting to emulate encoders that communicate using SSI at 1MHz. The traffic between our product under test and the encoder is over an RS-422 electrical bus. Therefore, we have a MAX491 transceiver that converts the clock lines to TTL and our data lines to RS-422. The problem is this: every time the TTL clock line pulses low or high, there is a great deal of ringing on the data line...so much so that the chip is interpreting it as a state change, causing bad data to be transmitted. The addition of a needed second encoder setup to the mix (using more lines on the FPGA card and another MAX chip) is only exasperating the situation more.
We are unsure why the line would be ringing so badly. Is there some kind of additional circuitry we need in this situation?
Dan M.

Excellent explanation Ben(kudos) . I often make this very short by saying that the signal will be confused. If it do not meet the same condition as it had then it left This true for (almost) all phenomenon within physics like light as an example.
Message Edited by t06afre on 02-13-2009 07:33 PM
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)

MacBook pro doesnt start. When I start my lap top, it shows the apple and the line uploading but it only goes like to 1/3 and then it goes blank for some seconds, then it turns off by itself and turn on again and happen the same, apple logo, etc

MacBook Pro doesnt start. When I start my lap top, it shows the apple and the line uploading but it only goes like to 1/3 and then it goes blank for some seconds, then it turns off by itself and turn on again and happen the same, apple logo, line .. the noise like-fan going on, then turn off and turn on again. Tried starting holding option command P and R key and didnt work either. Starting to think I have lost all my data inside

Try a SMC reset.
http://support.apple.com/kb/ht3964
It might be helpful if you indicated the exact model/year of your MBP. Are you running Lion OSX?
Ciao.

How can you tell if the line has errors?

I'll try and keep this as brief as possible.
<background>
For 2years (up to 6months ago) I was on BE ADSL and was very impressed with the quality of the service (low latency, decent bandwidth) on my line. However when I heard that FTTC was being rolled out I switched to Zen internet on the understanding that I could then switch to the FTTC product as soon as it was available.
Immediately after switching to Zen I started to experience problems with VOIP (I use VOIP extensions against an externally hosted PBX) and was seeing CRC errors on the line. In the process (~2months) of getting this diagnosed the FTTC product became available and since I wanted uncapped switched to BT Infinity for Business Option 2.
</background>
I now find that again I get sporadic VOIP problems (but not as bad as on the ADSL2 service via Zen) but very regular BBC iPlayer dropouts listening to the radio.
Due to the previous problems whilst on ADSL2 I suspect I still have a minor line fault but as I can't access any stats on the line have no way to verify. Does anyone have any pointers on where to get line stats to see what is going on on the connection? I can't get any info out of the OR modem.
Regarding my network. I am using a cabled, gigabit connection directly to a Draytek 2820n which is in turn doing the PPPoE through the BT OR modem. I use two different machines and experience the same issues on both. I'm a server & network admin by trade so pretty sure it's not my internal infrastructure at fault.
My IP profile is apparently 38717 Kbps down / 10000 KBps up.
BT Speed tester shows achieved 26581 down and 4912 up though

jmansford,
I may be wrong about this as I am only refering to my own 2750n settings,but looking at your upload throughput test results some if not all of your problems could be due to a wrongly wieghted QoS setting and/or port capacity setting based on QoS.
As you line profile is ok at 38717 Kbps down / 10000 KBps up it looks like there is no problem on your actual line,but phone line noise test might find some crackle,but I don`t think so.
By your post,you say your are routing PPPoE through the Draytek into the OR modem.?
If so,maybe you could try leaving the OR or Draytek out of the chain as a process of testing where faults [if any] are.?
To sum up a bit imo leaving the OR modem out of the net chain might be a better way as I only use the 2750n on it`s own as the OR modem is not then needed.
Opps! sorry I might be wrong in my above thinking,but is your Draytek just a router or a modem/router combined like the 2750n.?
But either way the QoS setting are still important.

Question about Noise Margin and Line Attenuation a...

1.       For several years I have had a BT telephone line. From the utilities provided by http://www.kitz.co.uk/adsl I find that I am connected to the Exchange at Merton Park (BT Code: LSMEPK) Distance:-   Direct:   960 metres (appx)* By Road: 1.29 km. Exchange Status ADSL enabled: March 30, 2000 DSL Max enabled:   March 30, 2006 SDSL enabled : Enabled 21CN due : (PSTN) N/A 21CN WBC (Broadband)   Enabled 15.02.09
2.       I previously had broadband from UKOnline and used a Speedtouch 570 adsl modem. I was paying £9.99 for a speed of 1MBit/s – in practice 700K – which was fine for most purposes but BBC iplayer did struggle a bit. UkOnline has been taken over by SKY so I switched to BT Total Broadband Option 3 in mid December, and initially used the Speedtouch 570 as there were delivery delays on BT Home Hub 2.0 due to weather conditions. Speed was initially very good but did not measure it.
3.       After Xmas I set up the BT Home Hub and ran a speed test - the profile was 2.5MBit/s. I was disappointed to get less than 3Mbit/s which is needed for BBC iplayer HD.
ADSL line status
Connection information
Line state Connected
Connection time 0 days, 2:26:57 ------> 6th January 2011
Downstream 2,268 Kbps
Upstream 440 Kbps
ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.5 ---à this apparently means ADSL2+
Latency type Interleaved
Noise margin (Down/Up) 15.7 dB / 31.9 dB
Line attenuation (Down/Up) 27.0 dB / 9.7 dB
Output power (Down/Up) 0.0 dBm / 12.7 dBm
Loss of Framing (Local) 22
Loss of Signal (Local) 3
Loss of Power (Local) 0
FEC Errors (Down/Up) 6512 / 0
CRC Errors (Down/Up) 0 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 2
4.       As part of the “slow speed wizard” I looked into getting the accelerator plate for my NTE5 split face master socket available for postage only (£1.20) but the web form advised me that if I proceeded with this order the broadband contract would automatically be extended by 12 months. I checked my BT internet account and was surprised to find an email (23rd Dec 2010) advising me that as an Option *1* customer I was in danger of exceeding my usage allowance – which surprised me as I am definitely Option 3. I wondered if I had had the speed throttled. Therefore phoned BT accounts who said the email was a mistake - I am Option 3, also said that accelerator plate was unlikely to make a difference.
5.       I contacted the BT call centre who talked me through various options. Plugging the hub direct into the master socket made no difference. They also ran a line test and said the line was fine.
6.       I therefore browsed the community care forum and find that disappointing speeds are not uncommon. One of the threads mentioned disconnecting the bell wire on the extensions. I follow this advice and removed line 3 on all extensions and then checked the ADSL status on the hub.
ADSL line status
Connection information
Line state Connected
Connection time 0 days, 6:33:45 10th January 2011
Downstream 2,272 Kbps
Upstream 888 Kbps
ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.5
Latency type Interleaved
Noise margin (Down/Up) 31.8 dB / 14.4 dB
Line attenuation (Down/Up) 27.0 dB / 9.7 dB
Output power (Down/Up) 0.0 dBm / 12.3 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 0 / 0
CRC Errors (Down/Up) 0 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 0
7.       This had a dramatic improvement on Upstream speed – and a big change to the noise margin Noise margin which had been (Down/Up) 15.7 dB / 31.9 dB and is now Noise margin (Down/Up) 31.8 dB / 14.4 dB. It did not improve the download speed.
8.       In the following days the BT hub has not been particularly stable with some intermittent loss of wireless connectivity every few hours. Examining the event log I was a bit disconcerted to see alterations to firewall settings had happened (which I hadn’t made) and resets which I am pretty certain I hadn’t made – and a userid login with a name like TR69. Perhaps these are occasioned by the BT speedtester? To be fair I had reset and powered off the hub a number of times in attempt to sort out this problems.
9.       I have switched to a Netgear DG83GT (V1.03.23) for the time being until I have what I can regard as a reasonably fast stabile connection. At the time of writing this has been stable for 20 hours DownStream Connection Speed 2268 kbps UpStream Connection Speed 888 kbps.As stated earlier I would like downstream to be faster.
The perceived wisdom on the forum seems to be that several days of complete stability are required if there is to be any improvement on speed.
10.   If a moderator or anyone with the relevant experience reads this I would be very grateful for answers to the follow questions:
A.      Is the change in the Noise Margin parameter a good thing or a bad thing?
B.      Are the line attenuation figures acceptable for a distance of under 1.5kilometres to the exchange?
C.      Should I be able in theory to get a faster speed i.e. downstream 3Mbit/s?
D.      From the forum it seems to take several days for speed adjustments to be effected or to take effect – is this a technical issue or a policy issue?
Many thanks.
Robert
Solved!
Go to Solution.

Good Morning - it is now 6 days since this posting. During this time there have been 2 resets of the adsl line
Fri, 2011-01-14 03:28:43 - LCP down.
Fri, 2011-01-14 03:28:54 - Initialize LCP.
Fri, 2011-01-14 03:28:54 - LCP is allowed to come up.
Fri, 2011-01-14 03:28:54 - CHAP authentication success
and
Sun, 2011-01-16 16:37:26 - LCP down.
Sun, 2011-01-16 16:37:36 - Initialize LCP.
Sun, 2011-01-16 16:37:36 - LCP is allowed to come up.
Sun, 2011-01-16 16:37:36 - CHAP authentication success
These were not initiated by me - and since noise margins and sync speeds changed as a consequence can I assume that this is evidence of the adaptive process working?
Secondly, as you can see, the noise ratio has vastly improved as have the upstream and downstream sync speeds
        System Up Time 157:54:52
      ADSL Link          Downstream          Upstream
      Connection Speed           11199 kbps           1091 kbps
      Line Attenuation           27.0 db           9.9 db
      Noise Margin           14.8 db           9.2 db
BUT from the BT speedtester, as shown below I seem to be stuck in a banded IP profile of 1750/1091 which is very different from the downstream sync speeds of 11199 Kbps(DOWN-STREAM)
Can BT staff take action to alter this? If they can how do I contact them?
Regards,
Robert
18th Jan 2010
Download Speed    1288 Kbps
0 Kbps   2000 Kbps
Max Achievable Speed
Download speedachieved during the test was - 1288 Kbps
For your connection, the acceptable range of speedsis 800-2000 Kbps.
Additional Information:
Your DSL Connection Rate :11199 Kbps(DOWN-STREAM), 1091 Kbps(UP-STREAM)
IP Profile for your line is - 1750 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 2.28:10.77:87.0 (SBE:NBEBE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.
The results of this test will vary depending on the way your ISP has decided to use these traffic classes.
2. Upstream Test: -provides background information.
Upload Speed       896 Kbps
0 Kbps   1091 Kbps
Max Achievable Speed
>Upload speed achieved during the test was - 896 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 1091 Kbps

Digital Audio Noise from the Headphone Jack

I have been searching for a while to see if anyone else has this problem.
I have random faint digital noise (bleeps, bloops, and whirls) from my headphone jack. This happens regardless of application. I can get it going good by just tossing the volume bar back and forth on the sound pref panel.
I have considerably less of this from the line out but still detectable noise.
I have disconnected everything non essential from the Mac Pro and my power outlet are reduced to a minimum. (monitor and Mac)
I have tried numerous headphones including Etymotic ER•6 and Sony MDR-7505.
This has always been present in 10.4.7 and 10.4.8. Like I said, its faint in volume - but it gets annoying!
I have read the following below and believe these do not apply to me because this is not an external powered device.
Power Mac G5: I hear buzzes, beeps, or humming
http://docs.info.apple.com/article.html?artnum=86523
Macintosh: Solutions for noise in the audio signal
http://docs.info.apple.com/article.html?artnum=86655
Thank you!
2 x 2.6 GHz Mac Pro Mac OS X (10.4.8) 1 GB original RAM

I found out today what is causing the noise on my Mac Pro!
Our next door neighbor has a really high power HAM radio that I am picking up static and transmissions from. I thought I was going insane when I heard weird voices coming out via my headphones. I know it is our neighbor because I heard him relay his name and location. Had to get my wife to listen to prove I was not going crazy.
Here is the weird thing. I do not have AirPort or BlueTooth on the MacPro...so I cannot figure out how the transmission is permeating the Mac. Could it be a shielding issue on some internal component?
Thanks!
Mac Pro 2.66 Mac OS X (10.4.9) 4GB / 1TB

Clicking noise on the phones

I have several accecc points 1220 connecting to the
same 3550 switch. I am able to connect fine the signal is good, however my phones give a clicking noise when they receive or make calls. I was hoping if any one has any suggestions.
Thanks
Dennis

Check to see if you have slips on the T1 connections which would normally result in a "clicking" on the line?

Can SwitchRes X fix the lines?

I have the previous generation 15" PB, not the current one, so I can't try this myself. Since the lines people are seeing are most likely from power supply ripple noise (probably from the inverter board) coupling into the video subsystem, and since the noise is visibly manifested as a difference frequency or beat frequency between the display's scan rate and the frequency of the noise, has anyone tried using a program like SwitchRes X or DisplayConfig X to alter the pixel dot clock (suggest trying ~5% to 10% higher) to see if the beat frequency can be altered enough such that the lines disappear? Just a thought of something to try for those looking for relief outside of any Apple may eventually provide.

Upon further review of this issue, I completely retract my theory that the horizontal lines are related to power supply noise. I should have looked into this more closely before coming to that conclusion. Sorry for false hopes.

How can I disappear the lines of the grid from the picture?

Please help!
This photo was made through a grid.
http://www.flickr.com/photos/apexivision/4468964280/sizes/o/in/photostream/
My question is: how can I disappear the lines of the grid from the picture with Photoshop CS2? Thanks!!!

Select the offending parts with a fuzzy-edged selection and adjust the curves to get some relief.
Then Burn and Dodge can be your friends as well.
Some things that can help: Make a duplicate layer so you have the original to compare against (and to go back to as needed. Work in 16 bits / channel and (ideally) at an upsampled resolution. Add a Curves adjustment layer above with the curves pulled up so you can lighten up the shadows as needed and see that you're getting things right even in the dark shadows.
You may need to do some selective noise reduction in the places you've enhanced, as the lightening and darkening will bring up the noise.
-Noel

Noise on the Line

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