dahdi-linux 1:2.5.0.1+dfsg-1ubuntu4~14.04.4 (ppc64el binary) in ubuntu trusty

 DAHDI (formly Zaptel) is an interface for telephony devices used by e.g.
 the Asterisk PBX software. The dahdi-* packages provide the kernel
 DAHDI kernel modules and their required setup environment.
 .
 This package includes the minimal Linux-specific userspace parts: udev
 configuration, xpp initialization scripts.