Upgrade to Zaptel 1.4.5

Get the current Zaptel source:
# cd /usr/src
# wget http://ftp.digium.com/pub/zaptel/zaptel-1.4.5.tar.gz

Unpack the archives:
# tar xvzf zaptel-1.4.5.tar.gz

Build the Zaptel:
# cd /usr/src/zaptel-1.4.5
# make clean
#./configure
# make
# make install