Estimated speed range vs Typical download speed

whats the difference between Estimated speed range and Typical download speed ?

Example of the speeds shown?

The range is usually a worst and best case type scenario estimate, typical will be what they commonly expect you to see, so will usually be within the range.

Of course how an individual line is performing trumps any estimates.

so zen have offered me these speeds but my line data shows that i only hit the Estimated once on the 01-Nov-2019.
my download speed in my home has never gone about 70mb down 18 up.

Estimated speed range (Kbps): between 79000 & 80000
Typical download speed (Kbps): 79000
Typical upload speed (Kbps): 19000
Your speed estimate was generated: 16/10/2019 12:01

BROADBAND LINE DATA
Please Note:
The following tables show any available information received from BT relating to your Zen Broadband line.
Only lines that use the DSLMax BT product can receive line information. If your line was activated prior to May 2006, we are unlikely to have any information from BT for your line.
BT will only provide line information if your circuit experiences technical problems which cause your BRAS profile to change (see our knowledgebase articles below for more information).
If there is no line information displayed, this most likely indicates your line is experiencing no technical problems and is running efficiently.
If your BRAS profile is displayed as “TR101”, the actual BRAS profile is displayed in the
Downstream column and will be approximately 88% of the current Sync Rate.

Your current maximum download speed is 73482Kbps.

Your current line technology is WBMC.

LINE RATE DATA
Upstream Downstream Sync Rate BRAS Profile Interleave Sync Date Date
19999 73482 75915 TR101 Auto 19-Apr-2020 20:48 19-Apr-2020 20:48
18337 41019 42378 TR101 Auto 19-Apr-2020 11:34 19-Apr-2020 11:34
18857 34662 35810 TR101 Auto 18-Apr-2020 15:27 18-Apr-2020 15:27
19999 73482 75915 TR101 Auto 31-Dec-2019 11:56 31-Dec-2019 11:56
19999 70333 72661 TR101 Auto 31-Dec-2019 11:32 31-Dec-2019 11:32
19999 73482 75915 TR101 Auto 06-Dec-2019 15:37 06-Dec-2019 15:37
19999 68600 70872 TR101 Auto 05-Dec-2019 23:21 05-Dec-2019 23:21
19999 73482 75915 TR101 Auto 05-Dec-2019 05:32 05-Dec-2019 05:32
19999 77117 79671 TR101 Auto 01-Nov-2019 06:41 01-Nov-2019 06:41
19999 72519 74920 TR101 Auto 31-Oct-2019 12:49 31-Oct-2019 12:49

79000 to 80000 are referring to connection speeds, so need to take into account overheads to compare with speed tests (i.e. what you see on your PC)

Maximum possible download speed from 80000 sync is 76000 Kbps

Estimates can be wrong - the next question is how many metres are you from the VDSL2 cabinet

i am approx 108 meters from the VDSL2 cabinet.

So full sync is a possibility, as to why you are not needs time and investigation e.g. state of wiring in the home, such as are there any extensions, powerplugs in use etc

i have no extensions from the master socket, so home phone and and dsl cable are plugged directly into the vdsl faceplate.

i open a case to see if i could cancel the contract and this is what they said.

In this case we cannot cancel the contract as the speeds that you are receiving are acceptable as speed tests show that you are receiving are above 70mbps down, I understand that this is below the speeds that are noted on your order however these are estimates and the speeds that you are getting are acceptable for the service that you are getting.

We do however want to be able to resolve this issue so as a gesture of good will am offering you the equivalent of £5 a month off the cost of your contract which totals £60 as recognition that the speeds that you are achieving are not quite what you expected.



but if my speeds are below the speed guarantee i should be able too right ?

You did not post the speed guarantee figure? What is the figure that you have been told is the guaranteed speed.

Cancelling the contract will of course leave you with no broadband until another provider can connect you, and as issue looks connection speed based if you stay with VDSL2 you will have the same issue still.

i was told on the phone that my guaranteed speed is 79mbps


i have added my Broadband technical details, i have deleted my information.

https://drive.google.com/open?id=1l7uYw6stvqhFfOEC2I...

Guaranteed or estimated?

Zen are not limiting these speeds, they are just what the line can get.

As MrSaffron says, you can go elsewhere but this won't change.

Matt

Edited by uno (Wed 06-May-20 14:25:16)

In terms of throughput if they guaranteed you a download speed of 79 Mbps that is actually an impossibility on VDSL2 for reasons mentioned before.

No ISP on VDSL2 even if they were to fix what is stopping you syncing at full sync was magically fixed would give you a download speed of 79 Mbps on your devices.

i was with sky (Sky Fibre Max) for many years and i was getting advised speeds from them 80/20 without any drop blow 70mbps down.


Telephone Number on Exchange COSTESSEY is served by Cabinet 21
Featured Products Downstream Line Rate(Mbps) Upstream Line Rate (Mbps) Downstream Handback
Threshold(Mbps) WBC FTTC Availability Date WBC SOGEA Availability Date Left in Jumper
High Low High Low
VDSL Range A (Clean) 80 79 20 19 76.4 Available Available --
VDSL Range B (Impacted) 80 79 20 19 74 Available Available --
G.fast Range A (Clean) 330 330 50 43.9 330 Available Available --
G.fast Range B (Impacted) 330 330 50 32.4 330 Available Available --
Featured Products Downstream Line Rate(Mbps) Upstream Line Rate (Mbps) Downstream Range (Mbps) Availability Date FTTP Install Process
FTTP on Demand 330 30 -- Available --
ADSL Products Downstream Line Rate (Mbps) Upstream Line Rate (Mbps) Downstream Range(Mbps) ADSL Availability Date WBC SOADSL Availability Date Left in Jumper
WBC ADSL 2+ Up to 16.5 -- 14 to 19.5 Available Available --
WBC ADSL2+ Annex M Up to 16.5 Up to 1.5 14 to 19.5 Available Available --
ADSL Max Up to 7 -- 6 to 8 Available Available --
WBC Fixed Rate 2 -- -- Available Available --
Fixed Rate 2 -- -- Available -- --
Observed Speeds VDSL
Max Observed Downstream Speed 80
Max Observed Upstream Speed 20
Observed Date 2020-04-23
Other Offerings Availability Date
VDSL Multicast Available
ADSL Multicast Available
G.fast Multicast Available
Premise Environment Status
Bridge Tap N
VRI N
NTE FacePlate N
Last Test Date 17-04-2020
FTTP is not available.

Edited by deleted (Wed 06-May-20 14:56:37)

Sky advised what download speed then?

Worth noting
Max Observed Downstream Speed 80
Max Observed Upstream Speed 20
Observed Date 2020-04-23

This is referring to connection speed, so that 80 drops to 76 once talking about actual download speeds on your devices.

There are two different readings, on is sync rate, the other is throughput speeds.

Sync rate is what you were told, throughput is the speed test results you are getting.

I politely suggest you have misunderstood what you are being told.

so shouldn't ISP`s take that information into account when offering certain speeds ?

It is a variable speed product .... I believe some CP’s do tout their wares as ‘up to 76mbps’ or some such.

You are always going to lose some speed, to do with how data is transmitted, even with FTTP.

Maybe the person you spoke to was using a little ‘artistic license’, or was unsure of the actual details. Sales people are there to sell.

Thank you again for taking my call before, in summery this is what was discussed.

We have has the sales calls listened to and you were advised that you would get around 79mbps download speeds at the time you ordered the call, these speeds are not realistic in a real world scenario but as you were advised them we will allow you to end your contract with Zen without paying ETC's.

If you chose to do this then you will need to contact an alternate provider in order to move your service, if you do this your contract will end on the day that the move to another provider takes place. The ETC's will be generated at this point but we will raise a credit against the account to cover them.

I will speak to you next week to see how you want to proceed.

Kind Regards


Chris

Technical Support Team Leader

The question is: Will you do better with another ISP?

Your sync rates are to do with your line, not what ISP you are connected to.

i was getting 80mbps down 20mbps up with sky without any issues.

From the checker stats you posted you were getting sync speeds of 80Mbps down 20Mbps up on the 23/04/20 so is this no longer the case? I am not sure what you are complaining about, you are not going to get better sync speeds. Throughput speeds are another matter and depend on many other factors such as the IP profile, re-transmission level (G.Inp), local Openreach or ISP backhaul congestion and so on.

In reply to a post by wheelhouse81:

i was getting 80mbps down 20mbps up with sky without any issues.

It is impossible to get download speeds of 80Mb on FTTC, with any ISP, even Sky.

There are TCP/IP/PPP overheads involved meaning the absolute maximum throughput possible on FTTC is around 77Mb.
A number of users have already pointed this out.

The Zen line rate data shows you consistently have an IP profile that's exactly 96.79% of the sync speed, which is a very predictable figure and even suggests G.INP isn't active on the line.

The Zen line data rate figures only go up to the 19th April 2020 and show the line never reaches 80Mb.
However the BT checker shows

Observed Speeds VDSL
Max Observed Downstream Speed 80
Max Observed Upstream Speed 20
Observed Date 2020-04-23

You were synced at 80Mb down 20Mb up on the 23rd April 2020.
That should give a maximum download speed of 77Mb.

You usually get the same sync speed with any ISP as the line remains the exact same. The only difference in sync speed is usually down to the modem provided by the ISP. Some perform better than others.

What modem are you using? Are you able to log in and post the line statistics?

Edited by j0hn83 (Fri 08-May-20 08:10:31)

In reply to a post by j0hn83:

You were synced at 80Mb down 20Mb up on the 23rd April 2020.
That should give a maximum download speed of 77Mb.

You usually get the same sync speed with any ISP as the line remains the exact same. The only difference in sync speed is usually down to the modem provided by the ISP. Some perform better than others.

What modem are you using? Are you able to log in and post the line statistics?

In general you are right, with one minor caveat.

You only get "the same sync speed" at any re-connection if you are close enough to the FTTC cabinet (via the PCP) to always sync at the maximum 80Mbps. If you can only ever sync at, for example, 68424Mbps or lower then your sync speed will vary with each re-sync and also depending on the stability settings chosen for the connection by the ISP.

Minor caveat? Pedantry of the highest order.

It was pretty obvious by saying "same sync speed" I didn't mean "100% exact same sync speed on every single resync down to the nearest kilobit."

To make you feel better...

*The sync speed won't increase with a change of ISP.
*The sync speed won't decrease with a change of ISP.
*The sync speed will remain relatively similar between ISP's.

*Excluding very small changes caused by varying background noise.

*Except for cases where DLM has been restricting a line on the previous ISP, or the new ISP uses a different DLM policy (speed/standard) and the DLM applies a different profile.
Less relevant to the OP who is likely on an ECI cabinet and Zen use the DLM Speed policy.

Feel free to correct me again if I missed any minor detail.

People are trying to explain to the OP why he is misunderstanding the situation. What you meant may be obvious to you, but could very well have confused the OP even more.

Your defensive over-reaction to my clarification posted for their sake is just that. An over-reaction.

Edit: There is even a fair chance the OP doesn't know what a modem is! They probably have a "router" or "hub" according to their ISP.

Edited by RobertoS (Fri 08-May-20 20:29:14)