Method of network load management for voice over internet protocol

(19)

(11)

EP 1 215 855 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION

(48)	Corrigendum issued on:
	21.08.2002 Bulletin 2002/34

(43)	Date of publication:
	19.06.2002 Bulletin 2002/25

(21)	Application number: 01204993.8

(22)	Date of filing: 18.12.2001

(51)	International Patent Classification (IPC)⁷: H04L 12/56, H04L 29/06

(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

(71)	Applicant: Nokia Corporation
	02150 Espoo (FI)

(72)	Inventor:
	Toumi, Jukka Fin-33730 Tampere (FI)

(74)	Representative: Read, Matthew Charles et al
	Venner Shipley & Co. 20 Little Britain London EC1A 7DH London EC1A 7DH (GB)

(54)	Method of network load management for voice over internet protocol

(57) A method and computer program to manage the load on a packet switched network so that the quality of VolP transmission does not degrade with the addition of a new VolP calls. This method and computer program determines the carrying capacity of the communications lines based on the bandwidth and TRAU frames per packet. Further, this method and computer program may determine the state of the network based on round trips times to nodes or computer gateways on the network. In either case calls are admitted only when doing do would not cause the quality of all VolP calls to degrade.