BRI Basic Installation Guide

This article aims at BRI basic configuration in Yeastar S-Series VoIP PBX. And we divide this guide into 2 parts.

1. Physical Configuraion.

2. Web Configurations and Adjusting in SSH.


Physical Configuration

First of all, please make sure the BRI trunk with correcting line order. Yeastar S-Series VoIP PBX only support BRI trunk with RJ11 interfaces.

Regarding how to make a BRI trunk, you can find an Ethernet line then follow above line order to make one. 


Web Configuration and Adjusting in SSH

Step 1. Get BRI trunk configuration parameters from BRI Carrier:

1. Parameters effecting BRI trunk connection

Signalling, Signalling Role and Switch Type

2. Parameters effecting BRI trunk calls

  • Codec
  • Echo cancellation
  • Overlap Dial
  • PRI Indication
  • Calling Party Numbering Plan
  • Calling Party Numbering Type
  • Called Party Numbering Plan
  • Called Party Numbering Type
  • Presentation Indicator
  • Screen Indicator
  • ISDN Dialplan
  • DOD


Step 2. Configuration in Yeastar S-Series VoIP PBX

LED lights: If the BRI trunk didn't connect, the LED light display with Orange Blink

After connecting BRI cable, then you can go to page 'PBX monitor > Trunks' to check the BRI trunk status. Below two situation are the BRI trunk physical layer didn't go through.

If getting above problem, then you need to configure BRI trunk on page 'Settings > PBX > Trunks > Edit > Basic'. Also make sure the BRI Carrier side enabled the BRI trunk. 

The most important parameters to make BRI trunk connected is Signalling, Signalling Role and Switch Type. More often than not, Yeastar S-Series VoIP PBX act Signalling Role as User. 


Step 3. Check below 2 kind of status you can find if the BRI trunk connected.

1. LED light display Solid Orange

2. On PBX Monitor > Trunks page, you can find the status display UP


Step 4. After BRI trunk connected, you can try to make Incoming can Outgoing calls. 

1. If you can't receive incoming calls, please check below parameters on BRI trunk edit page with BRI Carrier.

2. If you can't make outgoing calls, please try to configure DOD on BRI trunk edit page. 


If it is still not working, please try to get BRI debug log follow below guide, then send the log to Yeastar support team.

Have more questions? Submit a request


  • 0

    Hi Gary,

    You did a great job with this article. I have a little problem with an ISDN line that has 2 numbers. How can you make an S20 to manage the 2 numbers (ie. 0438111111 and 0438222222). When an outside call gets the ISDN line, number 0438111111 has to make ring a calling group, and number 0438222222 has to go to extension 210. I tried with DID but didn't work. Do you have any idea? Thanks.

    Best regards,

    Walter De Stefano.

  • 0

    Ciao Walter,

    try to add 2 INBOUND ROUTES with 2 different DID PATTERN ( 438111
    111 and 438222222). Select the BRI TRUNK in Member Trunks.

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