Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
config(isdn4k-utils)
isdn4k-utils
isdn4k-utils(x86-64)
lib_capi_mod_fritzbox.so.0()(64bit)
lib_capi_mod_rcapi.so.0()(64bit)
lib_capi_mod_std.so.0()(64bit)
libcapi20.so.3()(64bit)

Requires :

bzip2
libc.so.6()(64bit)
initscripts => 5.92
libcrypt.so.1()(64bit)
rtld(GNU_HASH)
coreutils
/sbin/service
libm.so.6(GLIBC_2.2.5)(64bit)
libncurses.so.5()(64bit)
libcapi20.so.3()(64bit)
rpmlib(PayloadIsXz) <= 5.2-1
libpcap.so.1()(64bit)
libdl.so.2()(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
systemd-units => 39-2
libutil.so.1()(64bit)
/bin/sh
libtinfo.so.5()(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
config(isdn4k-utils) = 3.2-99.el7
libcrypt.so.1(GLIBC_2.2.5)(64bit)
udev => 039-10.14.EL4
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
libc.so.6(GLIBC_2.7)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libc.so.6(GLIBC_2.15)(64bit)
chkconfig
libm.so.6()(64bit)
libc.so.6(GLIBC_2.3)(64bit)
/bin/bash
libdl.so.2(GLIBC_2.2.5)(64bit)
libpanel.so.5()(64bit)
hwdata => 0.146.18.EL-1

Content of RPM :
/etc/capi.conf
/etc/capi20.conf
/etc/isdn
/etc/isdn/callerid.conf
/etc/isdn/isdn.conf
/etc/isdn/isdnlog.isdnctrl0.options
/etc/isdn/isdnlog.users
/etc/isdn/rate.conf
/etc/isdn/vboxd.conf
/etc/isdn/vboxgetty.conf
/etc/ppp/ioptions
/etc/ppp/peers/isdn
/etc/ppp/peers/isdn/arcor
/etc/ppp/peers/isdn/avm
/etc/ppp/peers/isdn/avm-ml
/etc/ppp/peers/isdn/leased
/etc/ppp/peers/isdn/otelo
/etc/ppp/peers/isdn/talkline
/usr/bin/autovbox
/usr/bin/capifax
/usr/bin/capifaxrcvd
/usr/bin/capiinfo
/usr/bin/isdnbill
/usr/bin/isdnconf
/usr/bin/isdnrate
/usr/bin/isdnrep
/usr/bin/rmdtovbox
/usr/bin/vbox
/usr/bin/vboxbeep
/usr/bin/vboxcnvt
There is 120 files more in these RPM.