Kannel's upstream source package is distributed with the name gateway-x.y.z.tar.gz; since this name does not fit into Debian's packaging standards correctly, I have renamed it to kannel_x.y.z.tar.gz (kannel_x.y.z.orig.tar.gz). Additionally, the upstream tarball contains a debian/ directory; I have removed this directory in the Debian tarball. For additional documentation, install the kannel-docs package; documentation can then be found under file://usr/share/doc/kannels-docs