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 table contains the average PoP-to-PoP round-trip delay values (in ms) and percentage loss values for the BT Global Services Barcelona Node on 05 January 2009.

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	30	0.0		Lima	188	0.5
Auckland	311	1.0		London	36	0.0
Bangkok	264	1.0		Los Angeles	184	0.0
Birmingham (uk)	40	0.0		Madley	41	0.0
Bletchley (uk)	39	0.0		Madrid	11	0.0
Bogota	204	0.4		Manchester (uk)	42	0.0
Brussels	33	0.0		Manila	363	0.1
Budapest	54	0.0		Milan	47	0.0
Buenos Aires	238	0.6		Mumbai	193	1.1
Caracas	1	100		Munich	52	0.0
Chicago	131	0.0		New York	104	0.0
Copenhagen	74	0.0		Paris	46	0.0
Dallas	157	0.0		Perth	370	0.0
Dublin	52	0.0		Prague	47	0.0
Dusseldorf	33	0.0		Quito	203	0.5
Ealing (uk)	41	0.0		Reading (uk)	39	0.0
Edinburgh (uk)	49	0.0		San Francisco	181	0.0
Frankfurt	37	0.0		Santiago	217	0.6
Goonhilly	49	0.0		Sao Paulo	217	0.6
Gothenburg	50	0.0		Singapore	1	100
Helsinki	65	0.0		Stockholm	58	0.0
Hong Kong	269	0.1		Taipei	347	1.0
Ilford (uk)	37	0.0		Tokyo	282	1.0
Jakarta	250	0.8		Vienna	49	0.0
Kingston (uk)	38	0.0		Washington	114	0.0
Kuala Lumpur	247	1.1		Zurich	43	0.0

Click on one of the links below to access daily round-trip delay and percentage loss statistics for other nodes within Europe.

Amsterdam	Dusseldorf	Ilford (uk)	Munich
Birmingham (uk)	Ealing (uk)	Kingston (uk)	Paris
Bletchley (uk)	Edinburgh (uk)	London	Prague
Brussels	Frankfurt	Madley	Reading (uk)
Budapest	Goonhilly	Madrid	Stockholm
Copenhagen	Gothenburg	Manchester (uk)	Vienna
Dublin	Helsinki	Milan	Zurich

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

Click here to return to the network details for the whole BT Global Services IP Backbone.

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.