Jan 24 22:02:16 VERBOSE[3716] logger.c:     -- Starting simple switch on 'Zap/48-1'
Jan 24 22:02:19 DEBUG[3716] chan_zap.c: DTMF digit: 4 on Zap/48-1
Jan 24 22:02:19 DEBUG[3716] chan_zap.c: DTMF digit: 2 on Zap/48-1
Jan 24 22:02:19 DEBUG[3716] chan_zap.c: DTMF digit: 1 on Zap/48-1
Jan 24 22:02:20 DEBUG[3716] chan_zap.c: DTMF digit: 5 on Zap/48-1
Jan 24 22:02:20 DEBUG[3716] chan_zap.c: No echo cancellation requested
Jan 24 22:02:20 VERBOSE[3716] logger.c:   == Unknown extension '4215i' in context 'strata-tie' requested