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 monthly average inter-regional delay values (in ms) and percentage loss values for the BT Global Services IP Backbone Network.

		Intra-Europe			Transatlantic			Europe-USA
Month		Delay	Loss		Delay	Loss		Delay	Loss
September 2008		31 ms	0.0 %		82 ms	0.0 %		114 ms	0.0 %
August 2008		30 ms	0.0 %		81 ms	0.0 %		115 ms	0.0 %
July 2008		30 ms	0.0 %		78 ms	0.0 %		113 ms	0.0 %
June 2008		30 ms	0.0 %		77 ms	0.0 %		113 ms	0.0 %
May 2008		30 ms	0.0 %		83 ms	0.0 %		113 ms	0.0 %
April 2008		31 ms	0.0 %		83 ms	0.0 %		114 ms	0.0 %

		Europe-Latin			Europe-Asia
Month		Delay	Loss		Delay	Loss
September 2008		178 ms	0.4 %		249 ms	0.3 %
August 2008		185 ms	2.3 %		249 ms	0.1 %
July 2008		189 ms	0.3 %		247 ms	0.1 %
June 2008		186 ms	0.1 %		249 ms	0.0 %
May 2008		180 ms	0.1 %		250 ms	0.0 %
April 2008		178 ms	0.2 %		251 ms	2.5 %

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.