Hello, As per RFC 3261 the Registrars must ignore Record-Route field in any incoming REGISTER request and should not include the same in the response. But I find SER implementations including the Record Route Field in the 200OK Response. Any advice or suggestion?? Thanks karthikeyan Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or Mailadmin(a)wipro.com immediately and destroy all copies of this message and any attachments. _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers