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GSM/3G User Manual
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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 4-20 Instruction of Misc Settings
Options Definition
IAX Thread Count Establishes the number of iax helper thread to handle
I/O
IAX Max Thread Count Establishes the number of extra dynamic threads that
may by spawned to handle I/O
Max Call Number 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.
MaxCallNumbers_Nonvalidated 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.
Table 4-21 Instruction of Quality of Service
Options Definition
Tos Type of service
Cos Class of service