How to Monitor BRI Port in S-Series PBX

If there is a problem on the FXO port, FXS port or GSM channel, you can use the Port Monitor Tool in S-Series PBX to monitor the port, and download the packet to analyze it.

However, there is no option for BRI trunk in S-Series Port Monitor Tool now.

But don't worry, BRI trunk can be recorded via SSH.


1). Please enable FTP and SSH in S PBX Security Center first.

     Note the SSH password for login.



2). Logging in your S PBX 's Command Line Interface(CLI) via PuTTY or other SSH tools.

Download and install Putty on your PC:

Input PBX IP and SHH port 8022 in Session page.


3). The default username is support and password is what you note from PBX in above step 1).

For more detailed info about SSH login: How-to-Log-in-SSH-of-Yeastar-S-Series-VoIP-PBX

Input ( cat /etc/dahdi/ysport.conf ) and Enter.


One BRI trunk has 2 channels(here takes channels 39-40 in the picture as an example), and you had better record them at the same time.


4). Record first channel 39:

Input ( /ysdisk/support/bin/dahdi_monitor 39 -v -r /ysdisk/support/tmp/r1.raw -t /ysdisk/support/tmp/t1.raw ) and Enter.

5). Record second channel 40:

Right click the current putty to enable another separate window for the second channel.

Duplicate current session, and login again.

Input ( /ysdisk/support/bin/dahdi_monitor 40 -v -r /ysdisk/support/tmp/r2.raw -t /ysdisk/support/tmp/t2.raw ) and Enter.


6). Have one call test by using the specific BRI trunk.

Once you finish the call test: Click ( Ctrl ) and ( ) at the same time to stop the BRI trunk record.​​


7). Access to PBX FTP in your PC.

Use username support and password noted before to login.

Go to support>tmp, and you could find the recorded files for channels.


8). Use Audition software to open the .raw file and analyze it.

Send these files to Yeastar Support with detailed issue descriptions if you don't know how to analyze it.

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