Multitech MultiVOIP 200 MVP200, Руководство пользователя

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MultiVOIP 200 User Guide
between configurable minimum and maximum values. An Optimization Factor adjustment controls
how quickly the length of the Jitter Buffer is increased when jitter increases on the network. The
length of the jitter buffer directly effects the voice delay between MultiVOIP 200 gateways.
The default minimum dynamic jitter buffer of 150 milliseconds is the minimum delay that would be
acceptable over a low jitter network. The default maximum dynamic jitter buffer of 300 milliseconds is
the maximum delay tolerable over a high jitter network.
The Optimization Factor determines how quickly the length of the Dynamic Jitter Buffer is changed
based on actual jitter encountered on the network. Selecting the minimum value of 0 means low voice
delay is desired, but increases the possibility of jitter induced voice quality problems. Selecting the
maximum value of 12 means highest voice quality under jitter conditions is desired at the cost of
increased voice delay.
The Optimization Factor can be configured in the range of 0 to 12 with a default setting of 7.
Regional
The Regional tab controls the voice communications for the country or region in which the MultiVOIP
200 is being used.
From the Country/Region drop-down list you can select the country or region for which you are
configuring the MultiVOIP 200. The Tone Pairs group always displays the tones used in the country
or region currently selected. In addition to Australia, Central America, Chile, Europe, France, Japan,
UK, and USA, there is a Custom selection (with defaults identical to USA) that will make the Custom
button active. Clicking the Custom button enables you to edit the Tone Pairs and establish custom
sets of tone pairs for Dial Tone, Ring, and Busy on a Custom Tone Pair Settings dialog box.
The Pulse Generation Ratio group contains two ratios: the 60/40 is for the USA, and the 67/33 ratio
is for international applications.