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 Madrid Node between 22 Nov 2008 20:00 GMT and 22 Nov 2008 21:00 GMT.

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	37	0.0		Kuala Lumpur	238	0.0
Auckland	303	0.0		Lima	209	0.0
Bangkok	256	0.0		London	37	0.0
Barcelona	11	0.0		Los Angeles	174	0.0
Birmingham (uk)	40	0.0		Madley	42	0.0
Bletchley (uk)	39	0.0		Manchester (uk)	42	0.0
Bogota	186	0.0		Manila	343	0.0
Brussels	39	0.0		Milan	54	0.0
Budapest	61	0.0		Mumbai	185	0.0
Buenos Aires	231	0.0		Munich	54	0.0
Caracas	164	0.0		New York	99	0.0
Chicago	121	0.0		Paris	53	0.0
Copenhagen	80	0.0		Perth	352	0.0
Dallas	146	0.0		Prague	54	0.0
Dublin	53	0.0		Quito	186	0.0
Dusseldorf	38	0.0		Reading (uk)	39	0.0
Ealing (uk)	31	0.0		San Francisco	171	0.0
Edinburgh (uk)	49	0.0		Santiago	208	0.0
Frankfurt	42	0.0		Sao Paulo	208	0.0
Goonhilly	47	0.0		Singapore	NA	100
Gothenburg	57	0.0		Stockholm	62	0.0
Helsinki	72	0.0		Taipei	304	0.0
Hong Kong	260	0.0		Tokyo	280	0.0
Ilford (uk)	37	0.0		Vienna	56	0.0
Jakarta	239	0.0		Washington	104	0.0
Kingston (uk)	38	0.0		Zurich	50	0.0

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

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