moreover if you look at non invite transactions, ACK is not needed even. :) cheers v.
From: "Sachin Shenoy" <[EMAIL PROTECTED]> To: "malathi kamath" <[EMAIL PROTECTED]>, <[email protected]> Subject: Re: [Sip-implementors] Question on 401 Date: Sat, 6 May 2006 13:31:18 +0530 ACK is sent only for final resopnse of an INVITE transaction. Here since it is REGISTER request ACK is not required. Sachin Sachin Shenoy, Quantaz Networks Pvt Ltd Corporate Office: #186/2, Tapasvi Arcade, 1st floor, Hosur Road, 1st Stage, 1st Phase, BTM Layout, Bangalore. ----- Original Message ----- From: "malathi kamath" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, May 06, 2006 12:40 PM Subject: [Sip-implementors] Question on 401 > hi all, > Could u pls tell me whether the response 401 must be acknowledged or not? > RFC 3261 says that any final response other than 2xx must ACKed . But in > RFC 3665(sip call flow examples) , i could not find ACK for 401.( for eg. > in > section 2.2 successful registration) > pls clarify. > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
