Wrote ringtone.h
gcc -pipe  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -g  -Iinclude -I../include -D_REENTRANT -D_GNU_SOURCE  -O6 -march=i686  -DZAPTEL_OPTIMIZATIONS      -DBUSYDETECT_MARTIN     -fomit-frame-pointer  -Wno-missing-prototypes -Wno-missing-declarations     -DIAX_TRUNKING   -DCRYPTO -fPIC    -c -o chan_oss.o chan_oss.c
gcc -shared -Xlinker -x -o chan_oss.so chan_oss.o
gcc -pipe  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -g  -Iinclude -I../include -D_REENTRANT -D_GNU_SOURCE  -O6 -march=i686  -DZAPTEL_OPTIMIZATIONS      -DBUSYDETECT_MARTIN     -fomit-frame-pointer  -Wno-missing-prototypes -Wno-missing-declarations     -DIAX_TRUNKING   -DCRYPTO -fPIC    -c -o chan_modem_i4l.o chan_modem_i4l.c
gcc -shared -Xlinker -x -o chan_modem_i4l.so chan_modem_i4l.o
gcc -pipe  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -g  -Iinclude -I../include -D_REENTRANT -D_GNU_SOURCE  -O6 -march=i686  -DZAPTEL_OPTIMIZATIONS      -DBUSYDETECT_MARTIN     -fomit-frame-pointer  -Wno-missing-prototypes -Wno-missing-declarations     -DIAX_TRUNKING   -DCRYPTO -fPIC    -c -o chan_phone.o chan_phone.c
gcc -shared -Xlinker -x -o chan_phone.so chan_phone.o
gcc -c -pipe  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -g  -Iinclude -I../include -D_REENTRANT -D_GNU_SOURCE  -O6 -march=i686  -DZAPTEL_OPTIMIZATIONS      -DBUSYDETECT_MARTIN     -fomit-frame-pointer  -Wno-missing-prototypes -Wno-missing-declarations     -DIAX_TRUNKING   -DCRYPTO -fPIC  -o chan_zap.o chan_zap.c
chan_zap.c:30:22: tonezone.h: No such file or directory
chan_zap.c: In function `zt_call':
chan_zap.c:1720: warning: implicit declaration of function `tone_zone_play_tone'
chan_zap.c: At top level:
chan_zap.c:297: warning: `pridebugfdlock' defined but not used
make[1]: *** [chan_zap.o] Error 1
make[1]: Leaving directory `/usr/src/asterisk/channels'
make: *** [subdirs] Error 1