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 between 22 Nov 2008 21:00 GMT and 22 Nov 2008 22:00 GMT.

TO	Delay	Loss		TO	Delay	Loss
Amsterdam	14	0.0		Kuala Lumpur	230	0.0
Auckland	288	0.0		Lima	204	0.0
Bangkok	246	0.0		London	22	0.0
Barcelona	39	0.0		Los Angeles	171	0.0
Birmingham (uk)	25	0.0		Madley	27	0.0
Bletchley (uk)	24	0.0		Madrid	50	0.0
Bogota	177	0.0		Manchester (uk)	27	0.0
Brussels	27	0.0		Manila	347	0.0
Budapest	24	0.0		Milan	18	0.0
Buenos Aires	223	0.0		Mumbai	177	0.0
Caracas	NA	100		Munich	13	0.0
Chicago	116	0.0		New York	90	0.0
Copenhagen	46	0.0		Paris	16	0.0
Dallas	141	0.0		Perth	346	0.0
Dublin	38	0.0		Prague	17	0.0
Dusseldorf	11	0.0		Quito	175	0.0
Ealing (uk)	24	0.0		Reading (uk)	24	0.0
Edinburgh (uk)	33	0.0		San Francisco	165	0.0
Frankfurt	7	0.0		Santiago	202	0.0
Goonhilly	36	0.0		Sao Paulo	203	0.0
Gothenburg	40	0.0		Singapore	NA	100
Helsinki	36	0.0		Stockholm	29	0.0
Hong Kong	252	0.0		Taipei	305	0.0
Ilford (uk)	22	0.0		Tokyo	272	0.0
Jakarta	232	0.0		Vienna	29	0.0
Kingston (uk)	23	0.0		Washington	100	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)	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.