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 Stockholm Node on 05 January 2009.

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	29	0.0		Kuala Lumpur	249	0.1
Auckland	307	0.0		Lima	190	0.6
Bangkok	265	0.0		London	35	0.0
Barcelona	58	0.0		Los Angeles	184	0.0
Birmingham (uk)	39	0.0		Madley	40	0.0
Bletchley (uk)	37	0.0		Madrid	68	0.0
Bogota	208	0.4		Manchester (uk)	41	0.1
Brussels	32	0.0		Manila	365	0.1
Budapest	40	0.0		Milan	33	0.0
Buenos Aires	240	0.5		Mumbai	193	1.3
Caracas	NA	100		Munich	28	0.0
Chicago	130	0.0		New York	109	0.0
Copenhagen	17	0.0		Paris	32	0.0
Dallas	157	0.0		Perth	375	0.1
Dublin	51	0.0		Prague	32	0.0
Dusseldorf	26	0.0		Quito	204	0.5
Ealing (uk)	37	0.0		Reading (uk)	38	0.0
Edinburgh (uk)	48	0.0		San Francisco	182	0.0
Frankfurt	23	0.0		Santiago	219	0.5
Goonhilly	50	0.0		Sao Paulo	218	0.5
Gothenburg	13	0.0		Singapore	NA	100
Helsinki	9	0.0		Taipei	347	0.1
Hong Kong	271	1.0		Tokyo	336	1.0
Ilford (uk)	35	0.0		Vienna	44	0.0
Jakarta	246	0.1		Washington	115	0.0
Kingston (uk)	37	0.1		Zurich	29	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	Dublin	Helsinki	Milan
Barcelona	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	Vienna
Copenhagen	Gothenburg	Manchester (uk)	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.