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Santiago Diaz
Santiago Diaz

What is 3CX SBC and Why You Need It for Your Cloud Phone System


How to Download and Install 3CX SBC




If you have a remote office or a network with more than 10 IP phones, you may need to use a 3CX Session Border Controller (SBC) to connect them to your 3CX PBX. In this article, we will explain what is 3CX SBC, why you need it, how to download it, how to add it in 3CX, how to install it on different devices, and how to provision your IP phones with it.




download 3cx sbc



What is 3CX SBC and Why You Need It




The 3CX Session Border Controller (SBC) is a software service that installs in your local network to allow easy connection of IP phones to a 3CX instance in the cloud or a remote on-premise 3CX. The 3CX SBC combines all SIP (signaling) and RTP (media) VoIP packets from one location and delivers them to 3CX, thereby overcoming common firewall and networking issues that affect reliability.


Benefits of 3CX SBC




  • It simplifies the configuration and management of remote IP phones.



  • It reduces the bandwidth consumption and improves the audio quality.



  • It enhances the security and encryption of VoIP traffic.



  • It eliminates the need for a VPN or port forwarding.



  • It supports failover and load balancing for multiple WAN connections.



Supported Devices and Platforms for 3CX SBC




You can install the 3CX SBC on any of the following OS / Devices:


  • Raspberry Pi 4



  • Windows 10 / Server 2016 and up



  • Debian Linux using the 3CX ISO



How to Download 3CX SBC




Download Links for Different OS / Devices




To download the 3CX SBC for your preferred OS / Device, use the following links:


OS / DeviceDownload Link


Raspberry Pi 4[Follow this guide](^4^)


Windows 10 / Server 2016 and up[Download 3CX SBC for Windows](^1^)


Debian Linux using the 3CX ISO[Download the 3CX SBC Debian ISO](^1^)


How to Add the SBC in 3CX




Steps to Add the SBC in 3CX Web Client




  • Login to your 3CX Web Client, Admin Console.



  • Go to Admin, Voice & chat and press + Add SBC.



  • Select the type of machine you are going to use.



  • Your SBC will be created and you will see a pop up with the instructions on how to install it, a provisioning URL and Auth ID.



How to Install the SBC




Steps to Install the SBC on Windows




  • Set a Static LAN IP on the machine you are going to install it on.Run the 3CX SBC installer and follow the wizard.



  • Enter the provisioning URL and Auth ID that you got from the 3CX Web Client.



  • Click Next and wait for the installation to complete.



  • Once done, you will see a confirmation message that the SBC is connected to 3CX.



Steps to Install the SBC on Debian Linux




  • Set a Static LAN IP on the machine you are going to install it on.



  • Boot from the 3CX SBC Debian ISO and follow the installation steps.



  • Select Install 3CX SBC from the menu.



  • Enter the provisioning URL and Auth ID that you got from the 3CX Web Client.



  • Click OK and wait for the installation to finish.



  • Once done, you will see a confirmation message that the SBC is connected to 3CX.



Steps to Install the SBC on Raspberry Pi




  • Set a Static LAN IP on your Raspberry Pi.



  • Download and flash the 3CX SBC image for Raspberry Pi using [this guide].



  • Insert the SD card into your Raspberry Pi and power it on.



  • Connect to your Raspberry Pi via SSH using the default credentials (username: pi, password: raspberry).



  • Type sudo /usr/sbin/3cxsbc and press enter.



  • Enter the provisioning URL and Auth ID that you got from the 3CX Web Client.



  • Press enter and wait for the configuration to complete.



  • Once done, you will see a confirmation message that the SBC is connected to 3CX.



How to Provision Your IP Phones with 3CX SBC




Steps to Provision Your IP Phones with 3CX SBC




  • Login to your 3CX Web Client, Admin Console.



  • Go to Admin, Voice & chat and press + Add Phone.Select the IP phone model and the extension you want to assign to it.



  • Click Next and choose Remote (SBC) as the provisioning method.



  • Click Next and select the SBC that you have installed in your network.



  • Click Next and follow the instructions to factory reset your IP phone and enter the provisioning URL on it.



  • Click Finish and wait for your IP phone to reboot and register with 3CX.



Conclusion




In this article, we have shown you how to download and install 3CX SBC on different devices, how to add it in 3CX, and how to provision your IP phones with it. By using 3CX SBC, you can easily connect your remote IP phones to your 3CX PBX without any firewall or network issues. You can also enjoy better audio quality, lower bandwidth consumption, higher security, and more reliability. If you have any questions or feedback, feel free to contact us or leave a comment below.


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FAQs




  • What are the minimum requirements for 3CX SBC?The minimum requirements for 3CX SBC depend on the number of IP phones you want to connect. For up to 10 IP phones, you need a Raspberry Pi 4 with 2 GB RAM. For up to 30 IP phones, you need a Windows or Linux machine with 1 GB RAM and a dual-core CPU. For up to 100 IP phones, you need a Windows or Linux machine with 2 GB RAM and a quad-core CPU.



  • How many SBCs can I have in my network?You can have up to 10 SBCs in your network, each connecting up to 100 IP phones. However, you need to make sure that each SBC has a unique name and a unique LAN IP address.



  • How can I update my 3CX SBC?You can update your 3CX SBC from the 3CX Web Client, Admin Console. Go to Admin, Voice & chat and select the SBC you want to update. Click on the Update button and wait for the process to complete.



  • How can I troubleshoot my 3CX SBC?You can troubleshoot your 3CX SBC by checking the logs and status of the service. On Windows, you can find the logs in C:\ProgramData\3CX\SBC\Logs and the service in Services.msc. On Linux, you can find the logs in /var/log/3cx-sbc/ and the service in systemctl. On Raspberry Pi, you can find the logs in /var/log/3cx-sbc/ and the service in /etc/init.d/3cxsbc.



  • How can I uninstall my 3CX SBC?You can uninstall your 3CX SBC by running the uninstaller on Windows or Linux, or by flashing a new image on Raspberry Pi. Before uninstalling, make sure to remove the SBC from the 3CX Web Client, Admin Console.





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