asterisk/powerpc was built within a broken chroot and can't go to testing
I just noticed asterisk doesn't want to go to testing, because it
depends on powerpc on libtonezone1 (>= 1:1.4.10) - which however isn't
in Debian yet (but only 1:1.4.10~dfsg*).
Please make sure in future all of your packages are built within a clean
chroot (i.e. only binary packages comming from the suite you're building
for are installed there). In this specific case, I scheduled an NMU
(after waisting some time searching for the reason).