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 Zurich Node on 05 January 2009.

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	14	0.0		Kuala Lumpur	232	1.0
Auckland	297	0.0		Lima	174	0.5
Bangkok	252	1.2		London	22	0.0
Barcelona	43	0.0		Los Angeles	169	0.0
Birmingham (uk)	26	0.0		Madley	27	0.0
Bletchley (uk)	25	0.0		Madrid	54	0.0
Bogota	188	0.5		Manchester (uk)	27	0.0
Brussels	28	0.0		Manila	348	0.2
Budapest	24	0.0		Milan	18	0.0
Buenos Aires	222	0.5		Mumbai	180	1.0
Caracas	NA	100		Munich	13	0.0
Chicago	115	0.0		New York	94	0.0
Copenhagen	46	0.0		Paris	17	0.0
Dallas	142	0.0		Perth	356	0.2
Dublin	38	0.0		Prague	17	0.0
Dusseldorf	11	0.0		Quito	189	0.5
Ealing (uk)	24	0.0		Reading (uk)	24	0.0
Edinburgh (uk)	33	0.0		San Francisco	166	0.0
Frankfurt	7	0.0		Santiago	202	0.5
Goonhilly	37	0.0		Sao Paulo	203	0.6
Gothenburg	40	0.0		Singapore	NA	100
Helsinki	36	0.0		Stockholm	29	0.0
Hong Kong	256	0.1		Taipei	343	1.1
Ilford (uk)	22	0.0		Tokyo	304	0.0
Jakarta	234	1.2		Vienna	29	0.0
Kingston (uk)	23	0.0		Washington	98	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	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)	Vienna

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.