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

		Intra-Europe			Transatlantic			Europe-USA
Hourly Period		Delay	Loss		Delay	Loss		Delay	Loss
03:00 - 04:00		30 ms	0.0 %		76 ms	0.0 %		107 ms	0.0 %
02:00 - 03:00		30 ms	0.0 %		76 ms	0.0 %		107 ms	0.0 %
01:00 - 02:00		30 ms	0.0 %		75 ms	0.0 %		107 ms	0.0 %
00:00 - 01:00		32 ms	0.0 %		76 ms	0.0 %		107 ms	0.0 %
23:00 - 00:00		30 ms	0.0 %		76 ms	0.0 %		107 ms	0.0 %
22:00 - 23:00		31 ms	0.0 %		75 ms	0.0 %		107 ms	0.0 %
21:00 - 22:00		31 ms	0.0 %		76 ms	0.0 %		107 ms	0.0 %
20:00 - 21:00		30 ms	0.0 %		76 ms	0.0 %		107 ms	1.0 %
19:00 - 20:00		30 ms	0.0 %		74 ms	0.0 %		107 ms	0.0 %
18:00 - 19:00		30 ms	0.0 %		76 ms	0.0 %		107 ms	0.0 %
17:00 - 18:00		30 ms	0.0 %		75 ms	0.0 %		107 ms	0.0 %
16:00 - 17:00		30 ms	0.0 %		76 ms	0.0 %		107 ms	0.0 %

		Europe-Latin			Europe-Asia
Hourly Period		Delay	Loss		Delay	Loss
03:00 - 04:00		191 ms	0.0 %		227 ms	0.0 %
02:00 - 03:00		190 ms	0.0 %		228 ms	0.0 %
01:00 - 02:00		192 ms	0.0 %		228 ms	0.0 %
00:00 - 01:00		191 ms	0.0 %		227 ms	0.0 %
23:00 - 00:00		191 ms	0.0 %		223 ms	0.0 %
22:00 - 23:00		192 ms	0.0 %		222 ms	0.0 %
21:00 - 22:00		198 ms	0.1 %		222 ms	0.0 %
20:00 - 21:00		204 ms	0.0 %		222 ms	0.0 %
19:00 - 20:00		202 ms	0.1 %		222 ms	0.0 %
18:00 - 19:00		197 ms	0.2 %		222 ms	0.0 %
17:00 - 18:00		198 ms	0.1 %		221 ms	0.0 %
16:00 - 17:00		202 ms	0.1 %		221 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.