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

[Zeus Ng]

Is it running out of credit? I'm not familiar with VOVIDA B2BUA but I
remember there is some internal timer of 30s which trigger the BYE. You may
ask people in the b2bua mailing list.



> -----Original Message-----
> From: Alberto Cruz [mailto:acruz at tekbrain.com]
> Sent: Tuesday, 28 June 2005 1:39 PM
> To: Zeus Ng
> Cc: serusers at lists.iptel.org
> Subject: Re: [Serusers] Call expires after 30 seconds with 
> SER + MEDIAPROXY+VOVIDA B2BUA
> Importance: High
> 
> 
> 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-)
> 				
> 				
> 				
> 				
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