OpenVox DGW-1004 User Manual page 30

Options Definition
Band Specify bandwith of low, medium, or high to control which codes are used in general
Width
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 Codec priority controls the codec negotiation of an inbound IAX2 call. This option is inherited to all user entity separately which
Priority 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 In the ideal world, when we bridge VoIP channels we don't want to jitter buffering on the switch, since the endpoints can
Buffer 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 A maximum size for the jitter buffer
Buffers
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 The maximum number of interpolation frames the jitter buffer should return in a row. Since some clients do not send
Interps 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 Number of milliseconds by which the new jitter buffer will pad its size. The default is 40, so without modification, the new
Extra 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
IAX Thread Count
IAX Max Thread Count
Max Call Number
MaxCallNumbers_Nonvalidated
Table 4-3-6 Instruction of Quality of Service
Options Definition
Tos Type of service
Cos Class of service
Advanced Fax Settings
Table 4-4-1 Instruction of Quality of Fax Settings
Definition
Establishes the number of iax helper thread to handle I/O
Establishes the number of extra dynamic threads that may by spawned to handle I/O
The 'maxcallnumbers' option limits the amount of call numbers allowed for each individual remote IP
address. Once an IP address reaches its call number limit, no more new connections are allowed until the
previous ones close. This option can be used in a peer definition as well, but only takes effect for the IP of a
dynamic peer after it completes registration.
The 'maxcallnumbers-nonvalidated' is used to set the combined number of call numbers that can be
allocated for connections where call token validation has been disabled. Unlike the 'maxcallnumbers' option,
this limit is not separate for each individual IP address. Any connection resulting in a non-call token validated
call number being allocated contributes to this limit. For use cases, see the call should be sufficient in most
cases.