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 Amsterdam Node on 05 January 2009.

TO	Delay	Loss		TO	Delay	Loss
Auckland	283	0.1		Lima	157	0.6
Bangkok	236	1.1		London	7	0.0
Barcelona	30	0.0		Los Angeles	152	0.0
Birmingham (uk)	11	0.0		Madley	12	0.0
Bletchley (uk)	10	0.0		Madrid	41	0.0
Bogota	173	0.4		Manchester (uk)	13	0.0
Brussels	4	0.0		Manila	352	0.1
Budapest	25	0.0		Milan	18	0.0
Buenos Aires	206	0.6		Mumbai	165	1.0
Caracas	1	100		Munich	23	0.0
Chicago	98	0.0		New York	75	0.0
Copenhagen	46	0.0		Paris	17	0.0
Dallas	124	0.0		Perth	343	0.0
Dublin	24	0.0		Prague	18	0.0
Dusseldorf	4	0.0		Quito	173	0.5
Ealing (uk)	8	0.0		Reading (uk)	10	0.0
Edinburgh (uk)	20	0.0		San Francisco	149	0.0
Frankfurt	8	0.0		Santiago	186	0.6
Goonhilly	20	0.0		Sao Paulo	186	0.6
Gothenburg	21	0.0		Singapore	NA	100
Helsinki	36	0.0		Stockholm	29	0.0
Hong Kong	240	0.1		Taipei	291	0.0
Ilford (uk)	8	0.0		Tokyo	290	0.1
Jakarta	219	1.3		Vienna	20	0.0
Kingston (uk)	9	0.0		Washington	81	0.0
Kuala Lumpur	216	1.1		Zurich	14	0.0

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

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	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.