The Session Initiation Protocol (SIP) is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol (IP).

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Where did the SIP settings go to on my LG Optimus 4X?

About 3 months ago I bought my LG Optimus 4X HD (aka P-880), which shipped with Android 4.0.3. I searched the settings up and down, and was quite surprised there were no SIP settings available. I'm ...
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How to make “poor man's roaming” by proxying cell calls to SIP or Skype?

What applications should I use to make the Android device to forward calls from cell network to SIP or Skype and back? One device ("Home") is expected to be left at home, serving as proxy; other ...
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Is there a way for 3G to not disconnect when connecting to WiFi?

WiFi is unreliable, I wouldn't trust WiFi for SIP calls, I've disabled WiFi within CSipSimple. Now every time I connect to WiFi, my SIP registration seems to go away, and I'm not receiving any calls ...
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Converting phone to SIP gateway

Is there an application that can make the phone to be a SIP GSM gateway so I can make and receive cellular calls using SIP phone and/or re-route them through a SIP PBX?
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Receive VoIP call via Google Voice => IPKall => Sip2Sip => Android?

I'm trying to setup VoIP calling to/from my Android phone. I'm currently working on the incoming call part of the equation. To try to isolate the various parts, I started with the "IPKall => Sip2Sip" ...
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3answers
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Android phones with native SIP client?

I've heard from various sources that Android does have SIP support built in starting around version 2.3 Gingerbread, but I yet to see a single phone actually having it in its setup menus. Just ...
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5answers
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How do I prevent “No Internet calling account” error?

I'm running 2.3-Gingerbread. Calling was working fine over the telephone network. I set up the internet calling feature by adding an account to test the featuire out. Then I removed the account. Every ...
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LG G2 Native SIP client (where Is It?)

For some reason I couldn't find the native SIP client on this Phone. On my Note 2 N7100 it's under Settings-> Call Settings-> Accounts Will someone please show me where it's hidden? Note: LG G2 D802 ...