DGW-L1 User Manual
OpenVox Communication Co.Ltd www.openvox.cn
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on a per-user basis. If omitted, will fallback to English(en)
Table 4-3-3 Instruction of
Codec Settings
Options
Definition
Band Width
Specify bandwith of low, medium, or high to control which codes are
used in general
Disallow
Fine tune codes here using “allow” and “disallow” clause with specific
codes
Allow
Fine tune codes here using “allow” and “disallow” clause with specific
codes
Codec Priority
Codec priority controls the codec negotiation of an inbound IAX2 call.
This option is inherited to all user entity separately which will override
the setting in general.
Table 4-3-4 Instruction of
Jitter Buffer
Options
Definition
Jitter Buffer
Global default as to whether you want the jitter buffer at all
Force Jitter
Buffer
In the ideal world, when we bridge VoIP channels we don’t want to jitter
buffering on the switch, since the endpoints can each handle this. However,
some endpoints may have poor jitter buffers themselves, so this option will
force to always jitter buffer, even in this case.
Max Jitter
Buffers
A maximum size for the jitter buffer
Resyncthreshold When the jitter buffer notice a significant change in delay that continue over
a few frames, it will resync, assuming that the change in delay was caused
by a timestamping mix-up. The threshold for noticing a change in delay is
measured as twice the measured jitter plus this resync threshold.
Max Jitter
Interps
The maximum number of interpolation frames the jitter buffer should
return in a row. Since some clients do not send CNG/DTX frames to indicate
silence, the jitter buffer will assume silence has begun after returning this
many interpolations. This prevents interpolating throughout a long silence.
Jitter Target
Extra
Number of milliseconds by which the new jitter buffer will pad its size. The
default is 40, so without modification, the new jitter buffer will set its size to
the jitter value may help if your network normally has low jitter, but
occasionally has spikes.
Table 4-3-5 Instruction of
Misc Settings
Options
Definition
IAX Thread Count
Establishes the number of iax helper thread to handle I/O
