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chan_zap.c: In function 'zt_handle_event':
chan_zap.c:2772: 'ZT_EVENT_DTMFDIGIT' undeclared (first use in this function)
chan_zap.c:2772: (Each undeclared identifier is reported only once
chan_zap.c:2772: fir each function it appears in.)
make[1]: *** [chan_zap.o] Error 1
make[1]: Leaving directory /usr/src/asterisk/channels
make[1]: *** [subdirs] Error 1