[asterisk-users] jitterbuffer and PLC

[nakaji]

Thank you for advice.

> Do you get the same results if you use:
>
>  iax2 test losspct x
>
> Where x is the loss percent you'd like to test?
>

Yes, I did it.
On CLI show:

VvvvvvvvLvvvvvvvvvvvvvvvLvvvvLvvvvvv
vvvvvvvvvvvvvvvvvvvvvvLvvvvvvLvvvvvvvvvvvvvvvvvvv
vvvvvvvvvvLvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvLvvvv
vvvvLvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

This is same result　when I do ' iax2 test losspct 5' .
CLI  LOG shows,but no interpolations has made.

Then, I found some points now!
1 is how to write on sip.conf and extentions.conf .
2 is may be bug ? on 'abstract_jb.c' .

I want to use PLC and jitter on SIP/RTP - ulaw.

1.
So, I have to write sip.conf like that;
  jbenable=yes
  jbforce=yes
Both I have to write.
And  'Not' to use '/nj'  in extentions.conf .
When I use 'Playback application' in extentions.conf, and 'jbimpl=adaptive' 
in sip.conf,
I have not to use 'j' option.

When follow this style, I got a litte bit progress.
New CLI message, Igot.
--------------------------------
    -- SIP/siptr-00000001 answered SIP/201-00000000
[Jan 18 19:59:33] WARNING[11717]: abstract_jb.c:469 create_jb: Failed to put 
first frame in the jitterbuffer on channel 'SIP/siptr-00000001'
[Jan 18 19:59:33] ERROR[11717]: abstract_jb.c:507 create_jb: Failed to 
create frame log file with pathname 
'/tmp/ast_adaptive_jb_SIP#201-00000000--SIP#siptr-00000001.log': Success
    -- adaptive jitterbuffer created on channel SIP/siptr-00000001
[Jan 18 19:59:33] WARNING[11717]: chan_iax2.c:1093 jb_warning_output: 
Resyncing the jb. last_delay 0, this delay -326408, threshold 1000, new 
offset 326408
[Jan 18 19:59:33] ERROR[11717]: abstract_jb.c:507 create_jb: Failed to 
create frame log file with pathname 
'/tmp/ast_adaptive_jb_SIP#siptr-00000001--SIP#201-00000000.log': Success
    -- adaptive jitterbuffer created on channel SIP/201-00000000
    -- adaptive jitterbuffer destroyed on channel SIP/siptr-00000001
  == Spawn extension (default, 3002, 2) exited non-zero on 
'SIP/201-00000000'
    -- adaptive jitterbuffer destroyed on channel SIP/201-00000000
*CLI>
--------------------------------



But next is the second point.

2.
In ' abstract_jb.c ' , at line 507 or around there, jitterbuffer was failed 
.
Where /* Create a frame log file */  .

At  there , ' abstract_jb.c '  want to create frame log.
 like   '/tmp/ast_adaptive_jb_SIP#201-00000000--SIP#siptr-00000001.log'  .
But in /tmp/  , result,   there was  log-xxxxxx  (size 0).
So  ' abstract_jb.c ' failed to write log.
At last, PLC didn't work correct.

Is this bug ?      or I need something more  to set in sip.conf ?

New Asterisk 1.6.2.1, I tried, but result was same.

If there is some ideas, pls help me.
Regards;