Our IP Performance WWW site contains the results of round-trip delay and loss measurements which we perform between key locations on our IP Backbone Network, and to key locations on the networks of our strategic partners. Several of the pages on this site are updated hourly and thus reflect the current state of our network; other pages are there to provide a more historical view of the performance of our core network.

The following tables contain the recent daily average inter-regional delay values (in ms) and percentage loss values for the BT Global Services IP Backbone Network.

		Intra-Europe			Transatlantic			Europe-USA
Date		Delay	Loss		Delay	Loss		Delay	Loss
12 Oct 2008		30 ms	0.0 %		76 ms	0.0 %		108 ms	0.0 %
11 Oct 2008		30 ms	0.0 %		76 ms	0.0 %		108 ms	0.0 %
10 Oct 2008		30 ms	0.0 %		76 ms	0.0 %		108 ms	0.0 %
09 Oct 2008		30 ms	0.0 %		76 ms	0.0 %		108 ms	0.0 %
08 Oct 2008		30 ms	0.0 %		76 ms	0.0 %		108 ms	0.0 %
07 Oct 2008		30 ms	0.0 %		76 ms	0.0 %		109 ms	0.0 %
06 Oct 2008		30 ms	0.0 %		84 ms	0.0 %		112 ms	0.0 %
05 Oct 2008		30 ms	0.0 %		84 ms	0.0 %		113 ms	0.0 %
04 Oct 2008		30 ms	0.0 %		82 ms	0.0 %		120 ms	0.0 %
03 Oct 2008		30 ms	0.0 %		82 ms	0.0 %		112 ms	0.0 %
02 Oct 2008		30 ms	0.0 %		83 ms	0.0 %		113 ms	0.0 %
01 Oct 2008		30 ms	0.0 %		82 ms	0.0 %		112 ms	0.0 %
30 Sep 2008		30 ms	0.0 %		80 ms	0.0 %		119 ms	0.0 %
29 Sep 2008		30 ms	0.0 %		80 ms	0.0 %		111 ms	0.0 %

		Europe-Latin			Europe-Asia
Date		Delay	Loss		Delay	Loss
12 Oct 2008		174 ms	0.0 %		247 ms	0.0 %
11 Oct 2008		177 ms	0.1 %		247 ms	0.0 %
10 Oct 2008		177 ms	0.0 %		247 ms	0.5 %
09 Oct 2008		179 ms	0.0 %		246 ms	0.0 %
08 Oct 2008		177 ms	0.0 %		246 ms	0.0 %
07 Oct 2008		178 ms	0.0 %		249 ms	0.0 %
06 Oct 2008		182 ms	0.0 %		250 ms	0.0 %
05 Oct 2008		182 ms	0.0 %		250 ms	0.0 %
04 Oct 2008		196 ms	0.2 %		250 ms	0.0 %
03 Oct 2008		179 ms	0.0 %		250 ms	0.7 %
02 Oct 2008		176 ms	0.1 %		249 ms	0.0 %
01 Oct 2008		176 ms	0.2 %		251 ms	0.0 %
30 Sep 2008		176 ms	0.1 %		248 ms	0.0 %
29 Sep 2008		175 ms	0.0 %		249 ms	0.0 %

Detailed round-trip delay and loss statistics to/from a larger number of cities within Europe, North America, Asia Pacific, and Latin America are also available.

Notes
1) Each delay/loss value is colour-coded according to the acceptability of the result.
	Low delay/loss		High delay/loss
2) Further details of the measurements can be found by clicking on the "more information" button on the side navigation bar.