The different beroNet SBC and Gateway models support a different amount of concurrent sessions. You can find more info on this topic here: How beroNet handels transcoding
NOTE: The first 2 Sessions are Test-Sessions that can be used for free. When you buy further sessions you will need to license these 2 test-sessions as well. E.g. If you buy a 4 Session license, you have 4 total sessions, not 6.
In order to obtain a License you need to find out the serial number. Go to Management→Info:
With the serial number you can buy the needed license from your point of sales and you will retrieve a license file, which you need to upload in Preferences→Miscellaneous→SIP to SIP License:
After uploading the correct file, you will see the amount of sessions in this screen:
Now you're done and you can start to make calls.
Switching between session types
It is possible to enable or disable transparent Sessions with the advanced configuration option:
s2s_rtp_passthrough=1
Setting this value to 1 enables transparent sessions and 0 enables transcoding sessions.