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 London Node on 05 January 2009.

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	7	0.0		Kuala Lumpur	211	0.0
Auckland	276	0.1		Lima	150	0.4
Bangkok	230	0.8		Los Angeles	146	0.0
Barcelona	36	0.0		Madley	6	0.0
Birmingham (uk)	4	0.0		Madrid	31	0.0
Bletchley (uk)	3	0.0		Manchester (uk)	6	0.0
Bogota	166	0.4		Manila	337	1.1
Brussels	15	0.0		Milan	28	0.0
Budapest	36	0.0		Mumbai	158	1.2
Buenos Aires	200	0.5		Munich	29	0.0
Caracas	NA	100		New York	71	0.0
Chicago	91	0.0		Paris	10	0.0
Copenhagen	51	0.0		Perth	334	0.0
Dallas	117	0.0		Prague	38	0.0
Dublin	17	0.0		Quito	167	0.5
Dusseldorf	10	0.0		Reading (uk)	3	0.0
Ealing (uk)	1	0.0		San Francisco	142	0.0
Edinburgh (uk)	13	0.0		Santiago	180	0.5
Frankfurt	14	0.0		Sao Paulo	180	0.5
Goonhilly	15	0.0		Singapore	1	100
Gothenburg	28	0.0		Stockholm	35	0.0
Helsinki	43	0.0		Taipei	314	1.3
Hong Kong	234	0.1		Tokyo	292	0.1
Ilford (uk)	1	0.0		Vienna	26	0.0
Jakarta	212	0.1		Washington	75	0.0
Kingston (uk)	2	0.0		Zurich	22	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	Munich
Barcelona	Dusseldorf	Ilford (uk)	Paris
Birmingham (uk)	Ealing (uk)	Kingston (uk)	Prague
Bletchley (uk)	Edinburgh (uk)	Madley	Reading (uk)
Brussels	Frankfurt	Madrid	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.