[FAQ] BToE Firewall ports

[SteffenBaierUK]

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.