asterisk users - Jul 2005 - no sound. "Failed to write frame" (2nd post)

Hi all,

Couldn't find a place to search the list archives...

I'm having issues in getting any sound using a fresh asterisk install
and a SJPhone to connect to it. I went by the instructions pointed at
the "10 minute guide", located here:
http://www.voip-info.org/tiki-index.php?page=Asterisk+quickstart.

I installed it on a Slackware 10.1, by using no more than "make &&
make install && make samples". Then I proceeded with installing
asterisk-addons and asterisk-sounds as suggested. 

The thing is, soon as I get SJPhone to connect to asterisk (which
happens fine), I tried the echo service by dialing 600. Then I get:

   -- Executing Playback("SIP/julio-5ae7", "demo-echotest")
in new stack
   -- Playing 'demo-echotest' (language 'en')
Jul  4 14:35:42 WARNING[13521]: file.c:550 ast_readaudio_callback:
Failed to write frame
 == Spawn extension (default, 600, 1) exited non-zero on
'SIP/julio-5ae7'



On my SJPhone I can see the sound is being sent, but nothing is coming
back to me. Then I dialed 1000, for the "congrats" message: That's
what I get:

   -- Executing Goto("SIP/julio-f0ed", "default|s|1") in new
stack
   -- Goto (default,s,1)
   -- Executing Wait("SIP/julio-f0ed", "1") in new stack
   -- Executing Answer("SIP/julio-f0ed", "") in new stack
   -- Executing DigitTimeout("SIP/julio-f0ed", "5") in new
stack
   -- Set Digit Timeout to 5
   -- Executing ResponseTimeout("SIP/julio-f0ed", "10") in
new stack
   -- Set Response Timeout to 10
   -- Executing BackGround("SIP/julio-f0ed",
"demo-congrats") in new stack
   -- Playing 'demo-congrats' (language 'en')
Jul  4 14:37:05 WARNING[13523]: file.c:550 ast_readaudio_callback:
Failed to write frame
 == Spawn extension (default, s, 5) exited non-zero on 'SIP/julio-f0ed'

Again, asterisk seems to be unable to write any sound to a peer.
Any ideas on why that could happen? Thanks for any advice.



-- 
Julio C. Ody
http://rootshell.be/~julioody