Appeal No. 2003-2065
Application 09/881,441
inputted to a speech quality assessment algorithm together with
the stored test voice information stored at node B. The speech
quality assessment algorithm produces a measure of speech quality
of the particular voice call. See page 13 of Appellants’
specification. In this matter, this allows a service provider to
monitor the quality of the service being provided and to make
adjustments to the network as necessary. See page 14 of
Appellants’ specification.
Claims 1 and 11 are representative of Appellants’ claimed
invention and are reproduced as follows:
1. A method of measuring the speech quality of a voice call
between a first node and a second node in a packet-based
communications network, each of the first and second nodes
comprising the same stored test voice information, the method
comprising the steps of, at the first node:
(i) receiving packets for the voice call and adding at least
part of the stored test voice information to at least some of the
packets;
(ii) forwarding the packets to the second node;
(ii)(sic) at the second node, accessing the stored test voice
information at the second node and comparing it with the test
voice information received in the packets using a speech quality
assessment algorithm in order to obtain a measure of speech
quality for the voice call.
11. A signal for a voice call provided over a packet-based
communications network, said signal comprising a plurality of
packets at least some of which comprise test voice information
for comparison at a node with stored test voice information which
is the same as the test voice information.
3
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