asterisk users - Apr 2009 - issue with sip 180 responses

Hello,

SIP invites are accepted from imitator , but 'SIP 180'  is not
responded back  to imitator. 

 

By inspecting the issue , we can *see* the response is generated and
sent from asterisk (via asterisk logger ("sip debug" )) , but while
sniffing the interface with tcpdump, we can't see 180 response on the
interface.

 

We don't have errors on the interface, firewall is disabled , seems
there's no packet lost  (checked with ping with low interval ) , and
routes are ok ... 

 

By our tests we can see there is a direct connection between the mass of
the calls, and between the lost of sip 180 responses.

 

We're using Asterisk 1.4.4, with real-time configuration, also we made
few *modifications* in asterisk source code (changed app_dial.c,
/app_macro.c, /func_cdr.c)...

 

We're not sure if the problem on the OS Level (Centos 5.2) or in the
asterisk application.

Please assist...

~Nir

  

 

 

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Maybe it is buffering issues with the kernel? Does it happen only when
there is a peak in the new calls rate? Do all 180 messages get dropped?

                           __Yehavi:

2009/4/19 Nir Levi NirL at bezeqint.co.il
>
>
>  Hello,
>
> SIP invites are accepted from imitator , but 'SIP 180'  is not 
responded
> back  to imitator.
>
>
>
> By inspecting the issue , we can **see** the response is generated and
> sent from asterisk (via asterisk logger ("sip debug" )) , but
while sniffing
> the interface with tcpdump, we can't see 180 response on the interface.
>
>
>
> We don?t have errors on the interface, firewall is disabled , seems
there's
> no packet lost  (checked with ping with low interval ) , and routes are ok
?
>
>
>
>
> By our tests we can see there is a direct connection between the mass of
> the calls, and between the lost of sip 180 responses.
>
>
>
> We're using Asterisk 1.4.4, with real-time configuration, also we made
few
> **modifications** in asterisk source code (changed app_dial.c,
> /app_macro.c, /func_cdr.c)?
>
>
>
> We're not sure if the problem on the OS Level (Centos 5.2) or in the
> asterisk application.
>
> Please assist?
>
> ~Nir
>
>
>
>
>
>
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