Proxy, Proxy Server An intermediary entity that acts as both a server and a client for the purpose of making requests on behalf of other clients. A proxy server primarily plays the role of routing, which means its job is to ensure that a request is sent to another entity "closer" to the targeted user. Proxies are also useful for enforcing policy (for example, making sure a user is allowed to make a call). A proxy interprets, and, if necessary, rewrites specific parts of a request message before forwarding it.
Server A server is a network element that receives requests in order to service them and sends back responses to those requests. Examples of servers are proxies, user agent servers, redirect servers, and registrars. See http://www.sipknowledge.com/SIPGlossary.htm for more details. You may also want to read RFC 3261, once you get familiar with SIP glossary. On Thu, Aug 12, 2010 at 7:25 PM, Matty Sarro <[email protected]> wrote: > Hello Everyone! > I'm new to the world of SIP and just have a question that I have been having > a bit of a hard time finding an exact answer for. I'm trying to understand > what exactly the difference is between a SIP "proxy" and a SIP "server." > They seem to be mentioned as two different things, and yet people seem to > use them interchangably. > > Now does the proxy simply act as a proxy for a user and then the user gets > registered via the server? Can anyone explain a bit? > > I'd appreciate it. Specifically I'm asking about this in terms of IMS, where > the text book I'm reading through describes both the P-CSCF and I-CSCFs as > SIP proxies, and the S-CSCF as the SIP server. > > Also, if this is the wrong place to be asking, can someone point me towards > a newbie friendly SIP mailing list? > > Thank you. > -Matty > _______________________________________________ > 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
