[Snap] FritzBox 3790

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › [Snap] FritzBox 3790 - sync

Wingede

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#133496 23-Oct-2013 23:25

Hi all...
I am currently with another provider and different hardware which is vdsl and have dl sync rate of around 35mb.

I am in the process of changing over to snap and received my fritzbox today. All excited I decided to connect it up and see if there was a change in sync rates as I have had quite a few issues with current hardware.

The snap kit contained 2 ethernet cables, one looked like any other cable you can get but the other had like metal outter casing around the connector.

After powering it up using a straight ethernet cable (into my patch panel port which has a master xdsl spliiter) - the fritz reported that the dsl connection was interrupted. By replacing that cable with the one provided (with the metal casing - which also looked like the pairs were arranged differently) - a reboot and the router was "in training" for a very long time, eventually I stopped it and rechecked things.

Eventually using that cable, I got a sync here are some of the results which baffle me.

and finally this on the dsl overview

My current wiring is demarc > xdsl splitter > patch panel > router

I realise I haven't been moved over to snap yet but can anyone share light as to why it would sync at such low rates, but after turning on my old router it syncs back at vdsl speeds???

Thanks in advance

PeterReader

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#920742 23-Oct-2013 23:25

Hello... Our robot found some keywords in your post, so here is an automated reply with some important things to note regarding broadband speeds.

If you are posting regarding DSL speeds please check that

- you have reset your modem and router

- your PC (or other PCs in your LAN) is not downloading large files when you are testing

- you are not being throttled by your ISP due to going over the monthly cap

- your tests are always done on an ethernet connection to the router - do not use wireless for testing

- you read this topic and follow the instructions there.

Make sure you provide information for other users to help you. If you have not already done it, please EDIT your post and add this now:

- Your ISP and plan

- Type of connection (ADSL, ADSL2, VDSL)

- Your modem DSL stats (do not worry about posting Speedtest, we need sync rate, attenuation and noise margin)

- Your general location (or street)

- If you are rural or urban

- If you know your connection is to an exchange, cabinet or conklin

- If your connection is to a ULL or wholesale service

- If you have done an isolation test as per the link above

Most of the problems with speed are likely to be related to internal wiring issues. Read this discussion to find out more about this. Your ISP is not intentionally slowing you down today (unless you are on a managed plan). Also if this is the school holidays it's likely you will notice slower than usual speed due to more users online.

A master splitter is required for VDSL2 and in most cases will improve speeds on DSL connections. Regular disconnections can be a monitored alarm or a set top box trying to connect. If there's an alarm connected to your line even if you don't have an alarm contract it may still try to connect so it's worth checking.

I recommend you read these two blog posts:

- Is your premises phone wiring impacting your broadband performance? (very technical)

- Are you receiving a substandard ULL ADSL2+ connection from your ISP?

I am the Geekzone Robot and I am here to help. I am from the Internet. I do not interact. Do not expect other replies from me.

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hio77

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Lizard Networks

#920752 23-Oct-2013 23:40

something doesnt look right there at all! that 6ms latency is a little odd..

whats the spectrum looking like?

is that running the .51 firmware by any chance? broadcom DSLAMs apparently have a fair few issues with it, and ild recommend downgrading to .22.

just FYI, thats still vdsl speeds, theres just clearly something not looking too happy..

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Wingede

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#920755 23-Oct-2013 23:50

Spectrum ...

Can't remember the firmware version (currently have it powered down so will look at that tomorrow) - it just arrived today from snap so maybe it has been upgraded.

hio77

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#920759 24-Oct-2013 00:20

yup, thats the 84.05.51 firmware, looking like your missing a heap of spectrum there.. surprisingly, your spectrum where there should be ADSL crosstalk is pretty high however..

considering your stats, and what that part of the spectrum is looking like, ild extrapolate it to should be a pretty good connection.

if your a little uneasy about doing the technical stage of it, call snap and talk to their CSRs about downgrading your fritz.

but, if your happy to reconfigure it, snap shots of all the settings - voip (snap plus) can be a little dodgy to get right, but long as your connection is up a snap csr can remotely do that for you.

the steps for downgrading your fritz are explained here, http://service.avm.de/support/en/SKB/FRITZ-Box-7390-int/761:Installing-an-older-version-of-the-FRITZ-Box-firmware-downgrade

and for the 7390, the firmware you wanna drop down to is 84.05.22 - ftp://service.avm.de/Downgrade/FRITZ!Box%20Fon%20WLAN%207390/english/FRITZ.Box_Fon_WLAN_7390.en-de-es-it-fr.84.05.22.image

do note, there is some risk there, and you really are on your own if you can configure atlest your PPP and DSL setting - it wont import settings from a newer firmware.

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hio77

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#920760 24-Oct-2013 00:23

i missed your comments in the first post, i cant say i actually looked a the difference between the cat5 cables that came in the box, but the metal one seems to work pretty well for me.

the .51 firmware is known to be a tad slow to train a connection and boot up for some reason.. pretty sure its all the extra features that was added to it..

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Wingede

33 posts

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#920819 24-Oct-2013 09:30

Thanks for your replies - i'll look into the firmware and try again this evenning.

Wingede

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#921197 24-Oct-2013 21:56

Thanks hio77
Firmware downgrade worked a treat and got pretty much the same as per old hardware.
I am still a bit baffled as I had a prequal done and it said 5db - I am approximately 340 metres from the cabinet but there is a side street between our property so who knows if it is further.

Previously have bypassed the filter (since we are naked) - showed no improvement, even got a data tech to connect directly at the demarc and ran the router outside a bit to further eliminate anything internal - again no real improvement.

Below are the stats for tonights test

And the 17a profile really has me baffled!!! - didn't think it was possibly unless your less than 200 metres from the cabinet

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hio77

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#921212 24-Oct-2013 22:04

where are you located out of curiosity ...

your on a broadcom line card, which seem to be rather few and far between.

your 17a profile, is clearly not 17a - we have seen this before, a port reset sorts it out...

lastly, your latency on the upstream doesn't fit any DLM profiles at all...

something doesn't seem to happy there, ild have a chat to snap (assuming your connection has been transferred to them), get the profile reset and looked at..

5db prequal is done at different frequency levels, my prequal is 2db, while i actually see 4~5db. gotta remember cables dont quite go straight, and prequals can be wrong.

if you want, you can open up your telnet interface, use the vdsl command and choose option 11. it will list your distance in feet (an electrical guess at the distance anyway), if your curious of your distance..

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Wingede

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#921216 24-Oct-2013 22:10

We are located in Albany (in Auckland)

Still a wee while before migration to snap but was keen to see if different hardware made a difference, having gone through the wiring i'm pretty confident it isn't anything internal.

Do you think it is worth bringing to the attention of snap (if nothing changes after the migration)
I mean, we all want the speed but do I have justification to escalate ?

hio77

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#921220 24-Oct-2013 22:18

end of the day, it ultimately is up to you, we have seen a case of someone with a 17a, when clearly they dont. and it looks like your line may also fit into that category (among other oddities)

snap recognized something was wrong there, reset the profile and things went a bit better.. ill see if i cant dig up the posts (it was in the vdsl performance thread)

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sidefx

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#921247 24-Oct-2013 23:23

Not only are prequals done at different frequency, but my understanding is they aren't measured on demand, they're based on a bunch of readings chorus took all over the network at some point in the past.

So I believe they have this big database of attenuation readings all over the place and use that to calculate what your attenuation *should* be. In other words, things might have changed since then, or not be completely accurate, so I think it's best to view them as more of an estimate.

That is some odd readings though...

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Wingede

33 posts

Geek

#921774 25-Oct-2013 16:25

I've been going through the vdsl tweak thread (still going through it)

Can you tell me what is so odd as I don't quite follow?

hio77

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#921777 25-Oct-2013 16:28

Wingede: I've been going through the vdsl tweak thread (still going through it)

Can you tell me what is so odd as I don't quite follow?

your profile is 17a, but clearly not syncing at it. your stats from your other modem seem to indicate it is having the same problem, is it not?

your running with a odd latency profile, while not a bad thing, it doesnt line up with ANY DLM profile out there to our knowledge...

it could be something on the setup on the broadcom cards, since thats the only indifference i can see between most connections..

good luck going though that thread, its a LONG one! took me AGES to go through it the first time.. and now its doubled, if not tripped in pages..

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SamF

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#923844 29-Oct-2013 22:12

BTW, I maintain the first post in that thread and I've pretty much put all the accumulated useful knowledge in it. Sure, you'll get a lot more of the details by reading through the thread, but hell, it's MASSIVE! Anything really worth knowing is in the first post tho.

Wingede

33 posts

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#924003 30-Oct-2013 09:46

Yes it certainly is a long read! but some great information.

At this point until I have migrated to Snap and get a port reset I don't see it being constructive to escalate things. So that's the plan for now :)