asterisk users - Apr 2005 - H.323 call '...' cleared, reason 15 (Call ended due to security checks)

Thanks to Yves's commitment I was able to configure oh323 channel, cleared
the codec issue, registered to Gatekeeper, placed a call, but receive this
message on the console. What might be the problem?
 
Asterisk Ready.
*CLI>     -- Registered with gatekeeper
'netonegk@netonegk.netone.com.tr'.
    -- Executing Dial("SIP/2000-5a52",
"OH323/193.192.100.92/02124444441")
in new stack
    -- H.323 call to 193.192.100.92/02124444441 with codec(s) g729
    -- Called 193.192.100.92/02124444441
    -- H.323 call 'ip$localhost/5502' cleared, reason 15 (Call ended due
to
security checks)
    -- OH323/L5502 is circuit-busy
    -- Hungup 'OH323/L5502'
  == Everyone is busy/congested at this time (1:0/1/0)
    -- Executing Hangup("SIP/2000-5a52", "") in new stack
  == Spawn extension (local, 02124444441, 2) exited non-zero on
'SIP/2000-5a52'
    -- Executing Dial("SIP/2000-5a52",
"OH323/193.192.100.92/h") in new
stack
    -- H.323 call to 193.192.100.92/h with codec(s) g729
    -- Called 193.192.100.92/h
    -- H.323 call 'ip$localhost/5503' cleared, reason 15 (Call ended due
to
security checks)
    -- OH323/L5503 is circuit-busy
    -- Hungup 'OH323/L5503'
  == Everyone is busy/congested at this time (1:0/1/0)
    -- Executing Hangup("SIP/2000-5a52", "") in new stack
  == Spawn extension (local, h, 2) exited non-zero on 'SIP/2000-5a52'

Cenk Yabas wrote:
> Thanks to Yves's commitment I was able to configure oh323 channel,
cleared
> the codec issue, registered to Gatekeeper, placed a call, but receive this
> message on the console. What might be the problem?
>  
> Asterisk Ready.
> *CLI>     -- Registered with gatekeeper
'netonegk@netonegk.netone.com.tr'.
>     -- Executing Dial("SIP/2000-5a52",
"OH323/193.192.100.92/02124444441")
> in new stack
>     -- H.323 call to 193.192.100.92/02124444441 with codec(s) g729
>     -- Called 193.192.100.92/02124444441
>     -- H.323 call 'ip$localhost/5502' cleared, reason 15 (Call
ended due to
> security checks)
The gatekeeper has cleared the call. I guess because a password is
required or the one provided is not correct.
What version of the channel driver do you use?

Michael.