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 Brussels Node on 05 January 2009.

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	4	0.0		Lima	165	0.6
Auckland	291	1.1		London	15	0.0
Bangkok	244	0.1		Los Angeles	160	0.0
Barcelona	33	0.0		Madley	21	0.0
Birmingham (uk)	19	0.0		Madrid	43	0.0
Bletchley (uk)	19	0.0		Manchester (uk)	21	0.0
Bogota	181	0.5		Manila	361	0.1
Budapest	28	0.0		Milan	42	0.0
Buenos Aires	215	0.5		Mumbai	173	0.0
Caracas	NA	100		Munich	26	0.0
Chicago	107	0.0		New York	85	0.0
Copenhagen	48	0.0		Paris	20	0.0
Dallas	132	0.0		Perth	349	0.1
Dublin	32	0.0		Prague	37	0.0
Dusseldorf	7	0.0		Quito	180	0.4
Ealing (uk)	16	0.0		Reading (uk)	19	0.0
Edinburgh (uk)	26	0.0		San Francisco	157	0.0
Frankfurt	11	0.0		Santiago	194	0.5
Goonhilly	31	0.0		Sao Paulo	194	0.6
Gothenburg	25	0.0		Singapore	NA	100
Helsinki	39	0.0		Stockholm	32	0.0
Hong Kong	247	0.1		Taipei	328	0.1
Ilford (uk)	16	0.0		Tokyo	307	1.2
Jakarta	228	1.1		Vienna	23	0.0
Kingston (uk)	17	0.0		Washington	90	0.0
Kuala Lumpur	226	1.2		Zurich	28	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	Dusseldorf	Ilford (uk)	Munich
Barcelona	Ealing (uk)	Kingston (uk)	Paris
Birmingham (uk)	Edinburgh (uk)	London	Prague
Bletchley (uk)	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.