asterisk-dahdi 1:13.20.0~dfsg-1 (i386 binary) in ubuntu cosmic

 Asterisk is an Open Source PBX and telephony toolkit.
 .
 This package includes the DAHDI channel driver (chan_dahdi.so) and a number of
 other Asterisk modules that require DAHDI support. They will not be useful
 without kernel-level DAHDI support.
 .
 For more information about the Asterisk PBX, have a look at the Asterisk
 package.