Below is a copy of the briefing we received around 11th
May regarding speed issues from BT Wholesale. There was a previous brief
on 22nd April which had a flow chart which required either 2 speedtests
below 400kbps within a 20 hour period, or 1 below 400kbps and 1 below 1000kbps
within a 20 hour period and the exchange isn't on the "VP Hot list" but
this was superceded by the following.
BENCHMARKS – BT IPSTREAM HOME
The throughput benchmarks for BT IPstream Home are listed in the table below.
These would be regarded as normal service:
Product Benchmark Instantaneous throughput range
BT IPstream Home 250 between 50Kbps – 250Kbps
BT IPstream Home 500 between 100Kbps – 500Kbps
BT IPstream Home 1000 between 200Kbps – 1000Kbps
BT IPstream Home 2000 between 400Kbps – 2000kbps
SUPPORTING OUR CUSTOMERS
BT Wholesale cannot investigate slow throughput fault reports outside of the
ranges detailed in Table 2 until the Customer has investigated and discounted
factors that are within the customer’s control as highlighted above .
BT Wholesale will investigate throughput fault reports where the Customer has
determined that it is not caused by factors outside of BT Wholesale’s
control. For example, when the Customers End Users are receiving the expected
level of performance and one End User is still not achieving throughput within
the ranges specified above.
Due to variations within IP networks, especially the Internet, testing should
be replicated at suitable time intervals to determine if external influences
are affecting performance. A suggested minimum is a test off peak and another
at peak times both using the same test facility .
Speed related faults should only be referred to BT Wholesale once it has been
confirmed that an End Users performance is consistently below that being experienced
by the rest of your End User base.
BT would regard the speed ranges shown below as normal service. Please note
though that end user speed can be affected by various other factors outside of
the BTW Broadband Platform, these could include:
Customer Network availability
Internet Peering bandwidth availability
Internet / website availability
These would be negated by the same speed results on the BT Speedtester
When queried with our account manager at BT Wholesale the off peak was set
at midnight to 7am
"Demand for the BT Broadband products is extremely high and with the
current migration program we are having additional demands placed on the network.
We monitor the network constantly and apply trigger levels to capture high
usage in our VP’s.
The trigger is based on a 7 day period measured during
the 3 hour busy period and when it breaks the threshold, it goes forward for
a regrade, and the monitoring recommences. BT manages its network to ensure
that our customers and their end users experience good service performance.
The higher bandwidth demand for BT IPStream products has meant that a higher
number of VPs need to be increased in size. This has led to some issues in
increasing VP capacity, resulting in a number of ‘hot spots’, with
the effect that some customers may see throughput at peak times drop to a level
less than that experienced at other times. BT Wholesale has been running stricter
capacity management rules, which has helped speed up VP upgrades with a view
to improving performance.