Page 142 of 378 ITG Engineering Guidelines
553-3001-202 Standard 1.00 April 2000
• The jitter buffer is increased. In this case, the actual one-way del ay is
greater than that estimated by the delay probe.
• The codec is G.711A or G.711U. The voice packets formed by these
codecs are larger (120 to 280 bytes) than the delay probe packets (60
bytes). This means there is greater de lay exper ienced per hop . If the re are
low bandwidth links in the path, then the one-way delay will be
noticeably higher both in terms of average and variation.