Install asterisk-vpb by entering the following commands in the terminal:
sudo apt update sudo apt install asterisk-vpb
VoiceTronix devices support for the Asterisk PBX
Asterisk is an Open Source PBX and telephony toolkit. . This package includes the VoiceTronix channel driver (chan_vpb.so). It will not be useful without kernel-level VoiceTronix support. . For more information about the Asterisk PBX, have a look at the Asterisk package.