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

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	23	0.0		Lima	196	0.0
Auckland	289	0.0		London	16	0.0
Bangkok	239	0.0		Los Angeles	161	0.0
Barcelona	48	0.0		Madley	22	0.0
Birmingham (uk)	20	0.0		Madrid	53	0.0
Bletchley (uk)	19	0.0		Manchester (uk)	22	0.0
Bogota	170	0.0		Manila	333	0.0
Brussels	31	0.0		Milan	44	0.0
Budapest	54	0.0		Mumbai	170	0.0
Buenos Aires	218	0.0		Munich	45	0.0
Caracas	147	0.0		New York	84	0.0
Chicago	107	0.0		Paris	39	0.0
Copenhagen	66	0.0		Perth	348	0.0
Dallas	133	0.0		Prague	53	0.0
Dusseldorf	26	0.0		Quito	170	0.0
Ealing (uk)	17	0.0		Reading (uk)	19	0.0
Edinburgh (uk)	28	0.0		San Francisco	157	0.0
Frankfurt	30	0.0		Santiago	195	0.0
Goonhilly	26	0.0		Sao Paulo	195	0.0
Gothenburg	43	0.0		Singapore	NA	100
Helsinki	58	0.0		Stockholm	51	0.0
Hong Kong	246	0.0		Taipei	290	0.0
Ilford (uk)	17	0.0		Tokyo	261	0.0
Jakarta	225	0.0		Vienna	42	0.0
Kingston (uk)	18	0.0		Washington	90	0.0
Kuala Lumpur	225	0.0		Zurich	38	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	Dusseldorf	Ilford (uk)	Munich
Barcelona	Ealing (uk)	Kingston (uk)	Paris
Birmingham (uk)	Edinburgh (uk)	London	Prague
Bletchley (uk)	Frankfurt	Madley	Reading (uk)
Brussels	Goonhilly	Madrid	Stockholm
Budapest	Gothenburg	Manchester (uk)	Vienna
Copenhagen	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.