My question is regarding the source UDP port for a response not the destination 
(IP + ) port.
 
----- Original Message ----- 
From: "라스토기" <[EMAIL PROTECTED]>
To: "Amit P. Ahuja" <[EMAIL PROTECTED]>; 
<[email protected]>
Sent: Wednesday, January 30, 2008 4:02 PM
Subject: Re: [Sip-implementors] Determining UDP Connection to use for a 
SIPresponse


>>    Considering the behavior of UAS-2, my question is: whether any SIP 
>> standard suggests guidelines on whether it is advisable to send out 
>> responses from a UDP port which is different from the one on which the 
>> request was received? RFC 3261 - 18.2.2 Sending Responses only talks about 
>> the destination the response needs to be sent to, however nothing about the 
>> source. 
>>
> 
> Response are sent with help of Via. So whatever Port is mentioned in Via, 
> response will be sent to that from UAS-2. Looks like in your example Via 
> contains 2000. In case of TCP/TLS, response are sent to same connection (if 
> still there) from where REQUEST was received. Pls confirm..

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