From the SIP RFC:
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 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.
SIP proxies are elements that route SIP requests to user agent servers and SIP responses to user agent clients. A request may traverse several proxies on its way to a UAS. Each will make routing decisions, modifying the request before forwarding it to the next element. Responses will route through the same set of proxies traversed by the request in the reverse order.
With DNS SRV records you bind a SIP proxy to a specific domain, to enable URL calling to domains, instead of addressing a specific SIP proxy.
Back to SIP
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 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.
SIP proxies are elements that route SIP requests to user agent servers and SIP responses to user agent clients. A request may traverse several proxies on its way to a UAS. Each will make routing decisions, modifying the request before forwarding it to the next element. Responses will route through the same set of proxies traversed by the request in the reverse order.
With DNS SRV records you bind a SIP proxy to a specific domain, to enable URL calling to domains, instead of addressing a specific SIP proxy.
See also
Back to SIP
Comments
333sip proxy needed
i am useing proxies that got blocked from our ISP . with 5060 . i would like to work with any other sip proxy that work with non standard prot such as 5060 , i really appreciate your help
333proxy!!!
I just had a small question regarding SIP proxy server. The thing is i want to build a basic network using two sip phones and a couple of gateways. If I want to configure SIP proxy server for windows or solaris.
Which version of my IOS supports and what way should i proceed for this. any help appreciated. I need some suggestions on callgen as well
thankls
sumanth