Configuration of IP Telephony nodes using Element Manager Page 383 of 910
IP Line Description, Installation and Maintenance
4Expand the selected Codec. See Figure 90.
Figure 90
Selected Codec
Element Manager enables some jitter buffer adjustments on the browser
side. The following are the jitter buffer adjustments that are made in
Element Manager:
• A change of payload resets the Nominal Voice Playout (NVP) and
Maximum Voice Playout (MVP) values to the default recommended
values:
NVP = 2 * payload
MVP = NVP + 2 * payload
• A change of NVP value changes the MVP value to the default
(MVP = NVP + 2 * payload) and changes the values listed in the MVP
pull down list so the minimum value listed does not violate the
requirement of NVP + 2 * payload.
• The MVP value can be changed. The pull-down values range from
the minimum recommended value (see above) to the maximum
allowed value for the selected codec type.