Package: isdnutils-base

"isdnutils-base" package binaries on Debian:

/usr/bin/isdncause /usr/sbin/divertctrl /usr/sbin/hisaxctrl /usr/sbin/imon /usr/sbin/imontty /usr/sbin/iprofd /usr/sbin/isdnconfig /usr/sbin/isdnctrl

You may install this package on Debian with apt-get install isdnutils-base