[Serusers] Call expires after 30 seconds with SER + MEDIAPROXY+VOVIDA B2BUA

[Alberto Cruz]

I'm using VOVIDA B2BUA.

According with its man page it says the following:
"B2bUa is in the call-signalling-path all the times. There are
numerous applications in which b2bUa can be used either as a media
negotiator or simply supervising the calls between two parties."

Its configuration file is very simple only have the following:
<B2BUA_Configuration>
  <SIP>
     <Local>
       <Port>5065</Port>
       <Transport>UDP</Transport>
     </Local>
     <Proxy_Server>
       <Address>200.94.75.6</Address>
       <Port>5060</Port>
     </Proxy_Server>
     <Registration>
       <Register>no</Register>
       <Address>200.94.75.6</Address>
       <Port>5060</Port>
       <Expires>600</Expires>
     </Registration>
  </SIP>
  <RADIUS>
     <Local>
       <Authentication_Port>1812</Authentication_Port>
       <Accounting_Port>1813</Accounting_Port>
     </Local>
    <Billing_Server>
       <Address>200.94.75.11</Address>
       <Authentication_Port>1812</Authentication_Port>
       <Accounting_Port>1813</Accounting_Port>
       <Password>password</Password>
    </Billing_Server>
  </RADIUS>
  <PrePaid>
    <Billing>
       <Option>mandatory</Option>
       <Refresh_Time>20</Refresh_Time>
       <Extract_User_Id_From>Proxy-Authorization</Extract_User_Id_From>
       <User_Id_Decode_Scheme>Basic</User_Id_Decode_Scheme>
    </Billing>
       <Use_SIP_INFO>no</Use_SIP_INFO>
       <Use_HTTP>no</Use_HTTP>
  </PrePaid>
  <Redundancy />
</B2BUA_Configuration>

Regarding the NAT issue I have tested the Linksys with SER and 
MEDIAPROXY alone and I don't have any problem. I can have the call more 
than 1 hour and it stills alive.

Regards

Alberto Cruz
Zeus Ng wrote:

>Hi Alberto,
>
>I'm not sure how your B2BUA handle private IP in SDP (c=IN IP4
>172.31.253.127) from the Linksys UA. The call flow is "fine" (see below) but
>the RTP packets is not going through your B2BUA. Normally, the B2BUA shall
>rewrite the SDP and carry the RTP packets. In you case, it's not doing so.
>The BYE might be sent out by the B2BUA because it does not receive any RTP
>packets from Linksys. Thus, it disconnect the call because it thinks the UA
>is not responding. Although the call is established, the RTP packets are
>between Linksys and Cisco. Please check your B2BUA configuration.
>
>Also, as Klaus said, the call flow is a bit strange. The B2BUA is not
>relaying the 183 and 200 responses to SER than Linksys. I'm not sure why
>your Linksys is responding to these two responses from the B2BUA, it's
>definitely a problem for other NAT routers. I guess your Linksys do have the
>problem as it's not responding to the BYE request from B2BUA.
>
>Zeus
>
>  
>
>>-----Original Message-----
>>From: serusers-bounces at lists.iptel.org On Behalf Of Alberto Cruz
>>Sent: Tuesday, 28 June 2005 1:38 AM
>>To: Klaus Darilion
>>Cc: serusers at lists.iptel.org
>>Subject: Re: [Serusers] Call expires after 30 seconds with 
>>SER + MEDIAPROXY+VOVIDA B2BUA
>>Importance: High
>>
>>
>>Hi Klaus
>>
>>I'm trying to do the following:
>>
>>UA behind a NAT ----> SER+MEDIAPROXY --------> B2BUA -----> 
>>SER+MEDIAPROXY------> PSTN GATEWAY
>>
>>The first callee is the UA behind the NAT and then the B2BUA calls to 
>>the PSTN.
>>The B2BUA has a public IP address (isn't nated)
>>The PSTN GATEWAY has a public IP address too.
>> 
>>I'm attaching the full NGREP sniffing from the call in order 
>>you can see 
>>all the flow.
>>
>>Regards
>>
>>Alberto Cruz
>>Klaus Darilion wrote:
>>
>>    
>>
>>>30 seconds calls are usually an ACK problem due to NAT. 
>>>      
>>>
>>Make sure the
>>    
>>
>>>callee receives the ACK.
>>>
>>>regards,
>>>klaus
>>>
>>>Greger V. Teigre wrote:
>>>
>>>      
>>>
>>>>Only B2BUA can generate a BYE, so it's definitely not SER. However,
>>>>there may be something else that causes Vovida to generate it. I 
>>>>would start in that end. I don't know Vovida, so I wouldn't know 
>>>>where to start...
>>>>g-)
>>>>
>>>>
>>>>
>>>>_______________________________________________
>>>>Serusers mailing list
>>>>serusers at lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers
>>>>
>>>>
>>>>        
>>>>
>>>
>>>      
>>>
>
>
>
>  
>
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