[Asterisk-Users] Why I can't hear anything from my sjphone as an h323 endpoint?

[Willis Wang]

When I call asterisk(registered as an endpoint on gnugk) from sjphone(also 
registered on gnugk),
I can see following on the asterisk console: 

*CLI>   == Starting H323/ip$192.168.1.125:3260/4096 at default,20030060,1 
failed so falling back to
exten 's'
   -- Executing Wait("H323/ip$192.168.1.125:3260/4096", "1") in new stack
   -- Executing Answer("H323/ip$192.168.1.125:3260/4096", "") in new stack
   -- Executing DigitTimeout("H323/ip$192.168.1.125:3260/4096", "5") in new 
stack
   -- Set Digit Timeout to 5
   -- Executing ResponseTimeout("H323/ip$192.168.1.125:3260/4096", "10") in 
new stack
   -- Set Response Timeout to 10
   -- Executing BackGround("H323/ip$192.168.1.125:3260/4096", 
"demo-congrats") in new stack 

Is there anything wrong with my mpg123? I can't hear anything from sjphone, 
and after I dropped the
call,
I can't use 'stop now' to quit asterisk, and there will always be a process 
called mpg123 running: 

mpg123 -q -s --mono -r 8000 -b 2048 -f 4096 fpm-calm-river.mp3 
fpm-sunshine.mp3 

My linux version is debian woody 3.0 2.4.27-1-686, and the mpg321 package 
version is 0.2.10.3 

thanks a lot!