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
