Filter
Top Products
Understanding the SIP Protocol
November 2009 255
Registrations are one way to create this information, but not the only
way. Arbitrary mapping functions are configured at the discretion of
the administrator.
Finally, it is important to note that in SIP, registration is used for
routing incoming SIP requests and has no role in authorizing
outgoing requests. Authorization and authentication are handled in
SIP either on a request-by-request basis with a challenge/response
mechanism, or by using a lower layer scheme.
Full Copyright Statement
Copyright (C) The Internet Society (2002). All Rights Reserved.
This document and translations of it may be copied and furnished to others, and
derivative works that comment on or otherwise explain it or assist in its
implementation may be prepared, copied, published and distributed, in whole or in
part, without restriction of any kind, provided that the above copyright notice and this
paragraph are included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing the copyright
notice or references to the Internet Society or other Internet organizations, except as
needed for the purpose of developing Internet standards in which case the procedures
for copyrights defined in the Internet Standards process must be followed, or as
required to translate it into languages other than English.
The limited permissions granted above are perpetual and will not be revoked by the
Internet Society or its successors or assigns.
This document and the information contained herein is provided on an “AS IS” basis
and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK
FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.