Entering directory `/usr/src/linux-2.6.7'
  CC [M]  /usr/src/zaptel-1.4.3/zaptel-base.o
/usr/src/zaptel-1.4.3/zaptel-base.c: In function `calc_fcs':
/usr/src/zaptel-1.4.3/zaptel-base.c:786: error: `fcstab' undeclared (first use in this function)
/usr/src/zaptel-1.4.3/zaptel-base.c:786: error: (Each undeclared identifier is reported only once
/usr/src/zaptel-1.4.3/zaptel-base.c:786: error: for each function it appears in.)
/usr/src/zaptel-1.4.3/zaptel-base.c: In function `__putbuf_chunk':
/usr/src/zaptel-1.4.3/zaptel-base.c:6196: error: `fcstab' undeclared (first use in this function)
make[3]: *** [/usr/src/zaptel-1.4.3/zaptel-base.o] Error 1
make[2]: *** [_module_/usr/src/zaptel-1.4.3] Error 2
make[2]: Leaving directory `/usr/src/linux-2.6.7'
make[1]: *** [modules] Error 2
make[1]: Leaving directory `/usr/src/zaptel-1.4.3'
make: *** [all] Error 2