asterisk users - Mar 2007 - transfer=mediaonly : can't hear nothing

I've setup this simple configuration to test the new mediaonly iax 
feature in 1.4 :

Input (client) -> Server (routing) -> Termination
transfer=no        transfer=mediaonly   transfer=no

all the machines are in the same 192.168.0.x net

the routing Server in the middle has iaxusers realtime backend on mysql
the call is originated with a sip phone registered on the Input client
Server's credentials are hardcoded in iax.conf on the Termination server

codecs allowed are alaw and gsm, I see all the traffic as alaw
( Ooh, voice format changed to 8 )

with Server's transfer=no all works ok
with Server's transfer=yes all works "ok" I can hear, some seconds
(~12)
after the call is answered the Server spits a

    -- Channel 'IAX2/[Termination IP]:4569-2' ready to transfer
    -- Channel 'IAX2/[Client IP]:4569-1' ready to transfer

and inserts the cdr (in mysql), I can still hear
(of course the cdr is shorter than the actual call, or we would'nt be 
testing mediaonly :)

with Server's transfer=mediaonly I have quite immediatly the 'ready to 
transfer' message but cant' hear nothing (I see udp activity on I and T 
anyway)
10% of the tryes the transfer is not so immediate and I can hear a 
couple of seconds of monkey screams
(the cdr works ok, billing the entire call)


client I extensions.conf

[paps]
exten => _X.,1,Dial(IAX2/${LOGIN}:${PWD}@${SERVER}/${EXTEN})
exten => _X.,n,Hangup

routing server S extensions.conf

[default]
exten => _X.,n,Dial(IAX2/server:pwd@192.168.0.95/${EXTEN})
exten => _X.,n,Hangup

termination server T extensions.conf

[incoming]
exten => _X.,1,Answer
exten => _X.,n,Playback(tt-monkeys)   <-- .gsm
exten => _X.,n,Echo
exten => _X.,n,Hangup

Simone Cittadini wrote:
> I've setup this simple configuration to test the new mediaonly iax
> feature in 1.4 :
What version of Asterisk exactly?
> Input (client) -> Server (routing) -> Termination
> transfer=no        transfer=mediaonly   transfer=no
This doesn't make any sense; the 'Server' is going to have two
'friend'
entries for the other systems. Are you saying that you have
transfer=mediaonly set for both 'friends'?

The transfer settings on the endpoints are not going to matter; only the
server(s) in the middle of the call path will pay attention to them.
> with Server's transfer=mediaonly I have quite immediatly the 'ready
to
> transfer' message but cant' hear nothing (I see udp activity on I
and T
> anyway)
> 10% of the tryes the transfer is not so immediate and I can hear a
> couple of seconds of monkey screams
> (the cdr works ok, billing the entire call)
Once you have answered the questions above we can help you debug this
more thoroughly.