SIP communication implementation using Colibri IMX7D

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1

Hi all,

   I want to develop a VOIP communication for audio communication using Colibri IMX7D . Is the stack readily available , or we need to develop. Any example codes for testing. Please suggest the way to start the Implementation.

Thanks in advance.

2

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To develop a VoIP communication system using the Colibri iMX7D, you will need to implement a SIP (Session Initiation Protocol) stack for handling the signaling and an RTP (Real-time Transport Protocol) stack for the media streaming. Here are some steps and suggestions to get you started:

1. SIP Stack

There are several open-source SIP stacks available that you can use:

  • PJSIP: A free and open-source multimedia communication library written in C language, which implements standard-based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE.
  • Linphone: An open-source VoIP service that provides a SIP stack and media stack.

2. RTP Stack

For RTP, you can use:

  • JRTPLIB: A library that provides support for the Real-time Transport Protocol (RTP) as defined in RFC 3550.

3. Integration with Colibri iMX7D

You will need to cross-compile these libraries for the ARM architecture of the Colibri iMX7D. Here are the general steps:

Prerequisites

  • Toolchain: Ensure you have the appropriate cross-compilation toolchain installed.
  • Yocto Project: If you are using Yocto, you can create a custom layer and recipes for these libraries.

Steps

  1. Set Up Development Environment:

    • Set up your cross-compilation environment.
    • Download the source code of the SIP and RTP stacks.

  2. Cross-Compile Libraries:

    • Configure and compile the libraries for the ARM architecture.
    • For PJSIP, you can follow their cross-compilation guide.

  3. Develop Application:

    • Develop your application using the SIP and RTP libraries.
    • Implement the necessary signaling and media handling logic.

  4. Testing:

    • Test your application on the Colibri iMX7D module.
    • Use tools like sipp for SIP signaling testing and rtp-tools for RTP stream testing.
3

Hi @srinivas3228,
Apart from suggestions from Toradex AI, you may take starting reference from this article