Install capiutils by entering the following commands in the terminal:
sudo apt update sudo apt install capiutils
Description:
ISDN utilities - tools for CAPI-capable cards
Some ISDN cards (notably the AVM active cards, and the AVM passive cards when using the proprietary drivers) are accessed via the CAPI interface. The package contains utilities to initialize and get information about these cards.
Homepage: https://www.isdn4linux.de
Version: 1:3.25+dfsg1-9ubuntu2
Section: universe/net