(19)

(11)

EP 1 386 452 A2

(12)

(88) Date of publication A3: 27.11.2003 (43) Date of publication: 04.02.2004 Bulletin 2004/06 (21) Application number: 02734162.7 (22) Date of filing: 02.05.2002

(51) International Patent Classification (IPC)7: H04L 12/437 (86) International application number: PCT/US2002/013995 (87) International publication number: WO 2002/091681 (14.11.2002 Gazette 2002/46)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 04.05.2001 US 288912 P 04.05.2001 US 288901 P (71) Applicant: Appian Communications, Inc. Acton, MA 01720-3413 (US)	(72) Inventors: LEE, Charles Ashland, MA 01721 (US) KAPOOR, Harsh Boxborough, MA 01719 (US) MORGAN, Jonathan Groton, MA 01450 (US) (74) Representative: Frost, Alex John et al Boult Wade Tennant,Verulam Gardens70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)