PURE M3700 Bedienungsanleitung PDF herunterladen (Seite 10)

It support SIP standard and can register to SIP Proxy. If wireless LAN connection keeps, the Phone

can make calls in certain range without wiring.

2.1.2 SIP Servers

SIP servers include the following:

(1) Proxy server—The proxy server is an intermediate device that receives SIP requests from a

client and then forwards the requests on the client's behalf. Basically, proxy servers receive SIP

messages and forward them to the next SIP server in the network. Proxy servers can provide

functions such as authentication, authorization, network access control, routing, reliable request

retransmission, and security.

(2) Redirect server—Provides the client with information about the next hop or hops that a message

should take, then the client contacts the next hop server or UAS directly.

(3) Registrar server—Processes requests from UACs for registration of their current location.

Registrar servers are often co-located with a redirect or proxy server.

Hint: For most of ITSP (Internet Telephony Service Provider), the address (domain) of the servers

above are consistent.

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PURE M3700 Bedienungsanleitung Seite 10