JitterBuffer on meetme!

Hi all,
I use a trixbox machine with an Asterisk 1.4.18.1-2 version.I want to use jitterbuffer on meetme application.
I enabled and forced the jitterbuffer in sip.conf and I modified the code of my conference room for create a jitterbuffer on local channel in extensions_additional.conf.But it didn’t work and i don’t now why!!! Can you help me?

My sip.conf:
vmexten=*97
externip=81.50.86.195
localnet=192.168.1.0/255.255.255.0
bindport=5060
bindaddr=0.0.0.0
disallow=all
allow=ilbc
[color=red]jbenable=yes
jbforce=yes
jbmaxize=1000
jbimpl=adaptative
jblog=yes[/color]
context=from-sip-external
callerid=Unknown
notifyringing=yes
notifyhold=yes
limitonpeers=yes
tos_sip=cs3
tos_audio=ef
tos_video=af41

My meetme application:
[ext-meetme]
include => ext-meetme-custom
exten => STARTMEETME,1,MeetMe(${MEETME_ROOMNUM},${MEETME_OPTS},${GLOBAL_PIN})
exten => STARTMEETME,n,Hangup
[color=red]exten => 0682307601,1,Dial(Local/STARTMEETME@ext-meetme/nj)[/color]
exten => 0682307601,n,Hangup
exten => h,1,Hangup
exten => 8888,1,Macro(user-callerid,)
exten => 8888,n,SetGlobalVar(MEETME_ROOMNUM=8888)
exten => 8888,n,GotoIf($["${DIALSTATUS}" = “ANSWER”]?READPIN)
exten => 8888,n,Answer
exten => 8888,n,Wait(1)
exten => 8888,n,SetGlobalVar(PINCOUNT=0)
exten => 8888,n(READPIN),Read(PIN,enter-conf-pin-number,)
exten => 8888,n,SetGlobalVar(GLOBAL_PIN=${PIN})
exten => 8888,n,GotoIf($[x${PIN} = x22]?USER)
exten => 8888,n,GotoIf($[x${PIN} = x4444]?ADMIN)
exten => 8888,n,SetGlobalVar(PINCOUNT=$[${PINCOUNT}+1])
exten => 8888,n,GotoIf($[${PINCOUNT}>3]?h)
exten => 8888,n,Playback(conf-invalidpin)
exten => 8888,n,Goto(READPIN)
exten => 8888,n(ADMIN),SetGlobalVar(MEETME_OPTS=aAwM)
exten => 8888,n,Goto(0682307601,1)
exten => 8888,n(USER),SetGlobalVar(MEETME_OPTS=wM)
exten => 8888,n,Goto(0682307601,1)
; end of [ext-meetme]

Thank you in advance for your help.

Hi,
Nobody have some ideas for me, i’m really stopped.
I’m sure I did all normally configurations for this, but it don’t work !!!

Jitterbuffer on local channels in 1.4 I believe is only available from the backport Russell made. Did you install that patch? svncommunity.digium.com/view/rus … erisk-1.4/

I have thinked that this patch was in this version of Asterisk. But now, I will try to install this patch.thank you.