User`s manual

3.3 Voice Setting
User could define some parameters about the voice in this voice-setting page.
(see figure 3.3)
Figure 3.3: Voice Setting
● Codec Priority：It’s for the codec setting. User could use the codec,
which they want by the setting.
There are two firmware versions for SP5014/S. One is for G.723 only,
another is for G.729 only. It with no meanings if users use the G.723
version and configure the codec in G.729. User could check out the
firmware version first and configure the codec second. SP5012/S could
support all the codec.
● Frame Size：It’s the packet size for all codec. It will take more bandwidth
if users configure the packet size in the minimum value.
● G723 Silence Suppression：For the VAD and CNG function support.
● Volume：To adjust the gain of the output, input and DTMF.
● Echo Canceller：To enable the echo cancellation function.
● Jitter Buffer：To adjust the Jitter Buffer size to avoid the packets losing.
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