Patent ID: 7796530

Claim:
A method for testing the transmission quality of a bidirectional real speech transmission or multicast connection over an IP network between a first VoIP endpoint and a second VoIP endpoint, comprising: transmitting RTP speech packets from the first to the second VoIP endpoints, and transmitting RTP speech packets from the second to the first VoIP endpoints; detecting, at a detection point on a transmission channel between the first and the second VoIP endpoints, over a predetermined time period, an enumeration of the transmitted RTP speech packets from the first to the second VoIP endpoints as a first number, and an enumeration of the transmitted RTP speech packets from the second to the first VoIP endpoints as a second number; and arithmetically processing the first and second numbers, and outputting a value which is based on the arithmetical processing representing the transmission quality, wherein the arithmetic processing includes at least one of: a division, where a value 1 of the quotient represents the highest transmission quality; and a subtraction, where a value 0 for the difference represents the highest transmission quality.