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How can I determine the version of PJSIP library installed on my Asterisk server in CentOS platform? Also, how can I update the mentioned library?

I started writing application with Qt5, Im running pjsua2_demo.cpp from pjproject-2.9/pjsip-apps/src/samples/ in a QThread with infinite while(1) loop to leave pjsua2 running forever.

When I make 1-2 calls it blocks/hangs at the makeCall() function here:

I'm trying to use the latest version of pjsip for android https://github.com/VoiSmart/pjsip-android.

And got an error for incoming call:

I am trying to build MicroSIP version 3.20.7 for Windows 10 64-bit Operating System.

I already build PjProject (As mentioned in the documentation) and obtained all the .lib files for the same and now I am trying to use those .lib files for building MicroSIP as mentioned in the documentation over their website.

But I fall for an error of Unresolved External Symbols that is LNK2019 / LNK2001 / LNK1120.

(An image for the reference have been attached)

I am concluding with following steps.

1. Download the source for PjProject and extract the source using 7Zip.
2. Added a config_site.h file in the pjlib\include\pj.
3. Using Visual Studio 2022, Open PjProject and select pjsua as the source project.
4. Setting up the configuration for the project as -> Debug-Static for x64. and Build.
5. After a successfull build I got all the .lib files for the PjProject and successfully deployed the pjsua project showing a cli menu for PjSIP.
6. Now, I downloaded the latest source of MicroSIP 3.20.7 from the official website and extracted the source code using 7Zip.
7. Setting the configuration for the project as Debug for x64, and including all the header files and library files from windows kit as well as the other media libraries to the Include Directories and Library Directories {Opus, SDL2, FFMPEG,x264, VPX, PjProject}
8. I started to build the MicroSIP 3.20.7 and obtained the MicroSIP.lib file successfully.

But at the last where the build must give an executable file for MicroSIP, there are the list of error stating Unresolved External Symbols {LNK2019 / LNK2001 / LNK1120}

Below is the link to the image having all the error in console windows.

The error states the following message.

1. unresolved external symbol pjmedia_get_vid_subsys referenced in function "public: void __cdecl CmainDlg::OnTimer(unsigned __int64)" (?OnTimer@CmainDlg@@QEAAX_K@Z)

2. unresolved external symbol pjmedia_vid_dev_refrence referenced in function "public: void __cdecl CmainDlg::OnTimer(unsigned __int64)" (?OnTimer@CmainDlg@@QEAAX_K@Z).

etc there are other 17 error (Kindly take the refrence of above image.)

Below is the link to the image having error logged in output tab.

These are the message logged into the output tab

I am trying to compile and build PjProject {PJSUA}, with both audio and video support into it. But falling into the errors everytime which is Unresolved_External_Symbols.

I am building this project for Windows-32-BIT using Visual Studio 2022 and toolchain set latest version that is v143.

I want to intialize the various codec {OPUS, OPENH264, FFMPEG, OPENSSL, SDL etc}. I will just ask about the OPUS LIBRARY.

The steps are as follows:

1. Got the source of latest version of PjProject and loaded the project in Visual Studio 2022.

2. Mention the Opus Include directory and Opus Library Directory after compiling and building LibOpus.

3. Making PJSUA as source project and Setting configuration as Debug-Static-Win32 and start building the project.

NOTE

• Other addition dependencies such as SDL header and lib file have been included already.
• The config_site.h have been used to define the codec use {#define PJMEDIA_HAS_OPUS_CODEC 1}

The error that I have received into the error log are as following:

How can i read below message: connection established while making call in pjsip pjsua2 for android app.

is it possible to build pjsip with opus-codec for windows as dll? I built pjsua2.dll alone but seems no way to use opus with it.

If I set AccountVideoConfig::autoTransmitOutgoing false in pjsip sdk, I can not show window remote, and the screen is green without video data, I do not know why? But by the note, if AccountVideoConfig::autoTransmitOutgoing be set false, it just will not send video data to remote, and can receive and show window from remote. What has happen?

This is my code: