asterisk users - Jan 2007 - SIP Dial out timeout

Hi,

I am having a problem that is a miracle to me: If I dial out via 
voipstunt.com the call rings for a few seconds and then gives me a busy 
sign.

- I do not have a timeout set in my dial command
- the remote station does not cause the busy either
- dialing the number with the voipstunt client does not give busy after 
a few seconds
- dialing with the same voipstunt account with a softphone works without 
problems
- when dialing out via other channels, i.e. iax or misdn on the asterisk 
machine, no "timeout" problem

-in the CLI there is no message at all when the "timeout" occurs. It
shows:
...snipp...
     -- Called +4970712976872@voipstunt
     -- SIP/voipstunt-081b61a8 is making progress passing it to mISDN/1-1
P[ 1] After SETUP BC
funke*CLI>


Given these facts I believe that the problem has something to do with my 
asterisk setup, and more specifically, as it only occurs with SIP, 
sip.conf. Is that reasonable?

Unfortunately I have absolutely no idea, how to narrow it down further.

My sip.conf looks as follows:
----------
[general]
bindport=5060
bindaddr=0.0.0.0
srvlookup=yes
allowguest=no
qualify=no
srvlookup=yes
canreinvite=yes

[voipstunt]
type=friend
host=sip.voipstunt.com
disallow=all
allow=g726
username=my_account
fromuser=my_account
secret=my_password
qualify=2000
canreinvite=no
promiscredir=yes
rtptimeout=300
rtpholdtimeout=300

----------



If anybody has any hint on how this might be solved, please let me know.

Cheers.
Arik

Arik Raffael Funke wrote:
> Hi,
> 
> I am having a problem that is a miracle to me: If I dial out via 
> voipstunt.com the call rings for a few seconds and then gives me a busy 
> sign.
Start out with not using the "r" option to the Dial line.  That will 
remove the faked ringing tone.

Eric "ManxPower" Wieling wrote:
> Arik Raffael Funke wrote:
>> I am having a problem that is a miracle to me: If I dial out via 
>> voipstunt.com the call rings for a few seconds and then gives me a 
>> busy sign.
> 
> Start out with not using the "r" option to the Dial line.  That
will
> remove the faked ringing tone.

I am not having one in my dial string:
     -- Executing Dial("mISDN/1-1",
"SIP/+4971214348530@voipstunt||Tt")
in new stack

Any other ideas?

BTW: I am not sure I made this clear: The remote station does actually 
ring. I am not just getting a ringing indication. - Only the ringing 
stops after about 6 rings

Regards,
Arik