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

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	20	0.0		Kuala Lumpur	234	0.0
Auckland	293	0.0		Lima	211	0.0
Bangkok	249	0.0		London	26	0.0
Barcelona	45	0.0		Los Angeles	181	0.0
Birmingham (uk)	30	0.0		Madley	31	0.0
Bletchley (uk)	28	0.0		Madrid	56	0.0
Bogota	185	0.0		Manchester (uk)	32	0.0
Brussels	23	0.0		Manila	343	0.0
Budapest	39	0.0		Milan	32	0.0
Buenos Aires	232	0.0		Mumbai	180	0.0
Caracas	164	0.0		Munich	28	0.0
Chicago	126	0.0		New York	94	0.0
Copenhagen	60	0.0		Paris	31	0.0
Dallas	152	0.0		Perth	359	0.0
Dublin	42	0.0		Prague	32	0.0
Dusseldorf	25	0.0		Quito	186	0.0
Ealing (uk)	37	0.0		Reading (uk)	29	0.0
Edinburgh (uk)	37	0.0		San Francisco	177	0.0
Frankfurt	22	0.0		Santiago	210	0.0
Goonhilly	38	0.0		Sao Paulo	210	0.0
Gothenburg	55	0.0		Singapore	NA	100
Helsinki	51	0.0		Stockholm	43	0.0
Hong Kong	256	0.0		Taipei	305	0.0
Ilford (uk)	26	0.0		Tokyo	277	0.0
Jakarta	235	0.0		Washington	110	0.0
Kingston (uk)	28	0.0		Zurich	28	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	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	Stockholm
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.