[FAQ] BToE Firewall ports

Polycom Employee & Community Manager

[FAQ] BToE Firewall ports

A quick overview of the ports used with BToE application and the direction they require to be open


Port Number Type Description Direction
24802 UDP For audio streaming. Phone => PC
6000 TCP For SSH client connection (plink.exe). Used inside computer. (BToE application to Plink.exe)   
Dynamic TCP Plink.exe uses a dynamic port for connecting to VVX. Phone <=> PC
22 (On VVX) TCP VVX Uses this port to get connected with computer Phone <=> PC
    application. (Secure connection)  
2081 UDP Discovery packet broadcast is done on this port by VVX. Phone => PC
24801 TCP VVX and computer App will communicate each other using this port (non-secure connection) Phone <=> PC
24804 TCP VVX and the computer application will communicate with each other using this port (secure connection). This port is used by VVX Business Media Phones when in Manual Pairing Mode . BToE 3.7.0 or later Phone <=> PC


The dynamic port range is described => here <=


For more details please check the current BToE Release notes


BToE Discovery:


BToE Discovery is sent from the Phone to the BToE App to discover the Phone.



udp.port == 2081


If you are unable to see the above a Firewall on the PC is blocking the BToE Discovery


If you can see the above but BToE still not offers to pair and prompt the user to enter their credentials on the Skype for Business client then a local policy or as an example, Symantec Endpoint Protection blocks the communication.


If official support is required please check how to phone or open a case here

The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.


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Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections
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