We used asterisk to be able to speak SIP with the outside. LCR
has gained this capability in the past and we haven't used asterisk
in more than two years.
Asterisk doesn't seem to compile with master/dizzy and there is
little point in figuring out why.
Update to current master of lcr, which includes support for AMR
and RTP-bridge. Master openbsc doesn't support RTP-bridge yet,
but it will work with a transcoding LCR getting all TCH frames
in all codecs (HR/FR/EFR/AMR) via MNCC.