公开(公告)号：CA2310442C

公开(公告)日：2007-04-10

申请号：CA2310442

申请日：2000-06-01

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LAM YUK-MING PETER ,  BAUER ERIC JONATHAN ,  ORLEANSKI JOHN

IPC: H04L12/24 ,  H04M3/00 ,  H04L12/20 ,  H04L12/26 ,  H04L12/56 ,  H04L12/64 ,  H04Q11/04

Abstract: A network monitoring agent is disclosed that monitors network conditions, su ch as traffic volume, and determines when to dynamically adjust the encoding scheme for one or more connections. The network monitoring agent can select an encoding standard based on, for example, current network traffic volume, network erro r characteristics, time of day or day of week. In the illustrative network traffic implementation, an encoding standard that provides a lower degree of compression and a higher quality level is selected at times of lighter network tragic. Likewis e, as network traffic increases, an encoding standard that provides a higher degree of compression, although at a lower quality level, is selected in order to maximize the network utilization. The network monitoring agent notifies one or both of the devices associated with each connection of changes in the encoding scheme. Generally, both devices must change the compression algorithm at the same time, to ensure proper decoding of receive d packets. The initiating device inserts a notification in a field of a predefined numb er of packet headers to inform the recipient device that subsequent packets will be encod ed with a different specified encoding algorithm, until further notice. Thereafter, th e recipient device can load the appropriate codecto properly decompress and decode the received packets.