Oki BV1250 Installation Guide
E&M WORKSHEETS
Revision 1.0
Page 91 of 334
The Gateway will try to use the High Priority Gateway first. If the
remote gateway does not support the High Priority Codec, the Low
Priority Codec is offered.
Use the Codec Information field to record the voice transmission
Codec(s) to be used by all ports on the unit. Also specify the Codec
priority when two Codecs are used. G.729A is the default value for
H.323 networks. G723.1 can also be selected. The Efficiency to
Quality settings will vary based on the Codec selected.
In the sample, G729 is the only Codec configured for use.
Efficiency to Quality (VOICECOND)
The ratio of Payload to Bandwidth for each Codec can be adjusted.
The default values are shown in the following table.
Table 3-2: Codec Default Parameters
Codec
Payload
Bandwidth
G.729A
80 bytes
12K
G.723.1 (5.3)
160 bytes
7.5K
G.723.1 (6.4)
192 bytes
8.46K
The bytes and bandwidth values are inversely related in a
predetermined ratio. In the Maintenance Console Software, the values
are adjusted using a slide-bar control that maintains the correct ratio.
In the sample, Efficiency is recorded as the default value,
80 bytes/12.0 Kbps.
Содержание BV1250
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Страница 144: ...PHYSICAL INSTALLATION Oki BV1250 Installation Guide Page 134 of 334 Revision 1 0...
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