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Minimum Guaranteed Download Speed

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10 REPLIES 10
OldPeeBee
Team Player
I changed from TT ADSL to TT FTTC in November 2017, and was given a Minimum Guaranteed Download Speed (MGDS) of 24 mbps at that time. 

I have had a fair amount of problems with stability and dropping connections and some speed issues over the years I have been with TT. The FTTC change seemed to introduce a few of these again,and over a few months and many OR engineer visits the line was reasonably stabilised. Although, I was informed by the OR engineer that my connection to the FTTC cabinet is via a mix of copper and aluminium cables with quite a few joints - this cabling runs un-ducted to the cabinet - and was likely to deteriorate slowly with time and effect speed etc. 

I have just attempted to renew my contract with TT and they want to apply a MGDS of 16mbps. Having looked at both Sky and BT availability checkers they state a MGDS of 21mbps; but TTs gves 16mbps. Do these checkers not use the same OR data to calculate speeds? 

I've spoken to TT but can get no sense from them about the difference. Although at this point in time my line is stable and speeds are OK (27.3 down, 6.8 up) I'd sooner be able to raise a fault complaint at a 22mbps threshold than have to wait until 16mbps is the speed.

Community Team

Hi OldPeeBee

 

I'm sorry to hear this.

 

I've completed a line test which hasn't detected any faults and your line is in sync at 27.5mb. What speed do you receive when running a wired speed test?

 

Thanks

 

Debbie

OldPeeBee
Team Player

As far as I am led to believe, the MGDS is calculated from the achievable speeds on the line; and is used to indicate at what point the line is performing at less than an acceptable speed. It is also the speed at which OR will consider a fault MAY be present.

Community Team

Hi OldPeeBee

 

The sync speed of 27.5mb is within the predicted range for your line. What speed are you receiving when running a speed test?

 

Thanks

 

Debbie

OldPeeBee
Team Player

The question has nothing to do with current speeds, but is about the MGDS issued by TalkTalk as part of a contract.

Community Team

Hi OldPeeBee,

 

I'm just sending you a Private Message to confirm some details so I can look into this further.

 

Thanks

 

Debbie

 

 

Community Team

Hi OldPeeBee,

 

Thanks for the PM. The minimum guaranteed speed is now based on peak throughput speed, previously it was based on sync speed, that's why the MGDS  differs from the speed given previously, apologies for any confusion


Chris

OldPeeBee
Team Player

I fully understand that speed calculations are now achieved by a different method (since March 1st); so how do Sky and BT calculate the MGDS on my line to be 22mbps when TT only manage 16mbps - FTTC, copper and aluminium cable to the house. I am told that all these ISPs use the Openreach data.

pentham
Team Player
Recent Openreach engineer visit, explained to me that TalkTalk cap standard fibre speed.



ferguson
Community Star

@pentham wrote:
Recent Openreach engineer visit, explained to me that TalkTalk cap standard fibre speed.




If by "standard" you mean the base product then every ISP does that, subject to the overall capabilities of the line. But I am not sure how this is relevant to the discussion here?

Community Team

Hi OldPeeBee,

 

Yes we do use openreach data but sorry I don't know why BT and Sky are giving you different speeds.

 

Chris