First of all, what does SIP stands for?
SIP, which is the “Session Initiation Protocol,” in IP telephony a commonly used protocol.
SIP is a request-response protocol that closely resembles two other Internet protocols, HTTP and SMTP; consequently, SIP sits comfortably alongside Internet applications. Using SIP, telephony becomes another web application and integrates easily into other Internet services. SIP is a simple toolkit that service providers can use to build converged voice and multimedia services.
Due to the fact that each SIP client is different, we only specify the following parameters:
SIP Domain: friendcaller.com
SIP Proxy: proxy.friendcaller.com
(Standard) SIP Port: 5060 (used both for UDP and TCP)
Username: <your at FriendCaller.com registered email>
Password: <your FriendCaller password>
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