asterisk:~ # ztcfg -vvv

Zaptel Configuration
======================

SPAN 1: ESF/B8ZS Build-out: 0 db (CSU)/0-133 feet (DSX-1)
SPAN 2: ESF/B8ZS Build-out: 0 db (CSU)/0-133 feet (DSX-1)

Channel map:

Channel 01: FXO Kewlstart (Default) (Slaves: 01)
Channel 02: FXO Kewlstart (Default) (Slaves: 02)
Channel 03: FXO Kewlstart (Default) (Slaves: 03)
Channel 04: FXO Kewlstart (Default) (Slaves: 04)
Channel 05: FXO Kewlstart (Default) (Slaves: 05)
Channel 06: FXO Kewlstart (Default) (Slaves: 06)
Channel 07: FXO Kewlstart (Default) (Slaves: 07)
Channel 08: FXO Kewlstart (Default) (Slaves: 08)
Channel 09: FXO Kewlstart (Default) (Slaves: 09)
Channel 10: FXO Kewlstart (Default) (Slaves: 10)
Channel 11: FXO Kewlstart (Default) (Slaves: 11)
Channel 12: FXO Kewlstart (Default) (Slaves: 12)
Channel 13: FXO Kewlstart (Default) (Slaves: 13)
Channel 14: FXO Kewlstart (Default) (Slaves: 14)
Channel 15: FXO Kewlstart (Default) (Slaves: 15)
Channel 16: FXO Kewlstart (Default) (Slaves: 16)
Channel 17: FXO Kewlstart (Default) (Slaves: 17)
Channel 18: FXO Kewlstart (Default) (Slaves: 18)
Channel 19: FXO Kewlstart (Default) (Slaves: 19)
Channel 20: FXO Kewlstart (Default) (Slaves: 20)
Channel 21: FXO Kewlstart (Default) (Slaves: 21)
Channel 22: FXO Kewlstart (Default) (Slaves: 22)
Channel 23: FXO Kewlstart (Default) (Slaves: 23)
Channel 24: FXO Kewlstart (Default) (Slaves: 24)
Channel 25: Individual Clear channel (Default) (Slaves: 25)
Channel 26: Individual Clear channel (Default) (Slaves: 26)
Channel 27: Individual Clear channel (Default) (Slaves: 27)
Channel 28: Individual Clear channel (Default) (Slaves: 28)
Channel 29: Individual Clear channel (Default) (Slaves: 29)
Channel 30: Individual Clear channel (Default) (Slaves: 30)
Channel 31: Individual Clear channel (Default) (Slaves: 31)
Channel 32: Individual Clear channel (Default) (Slaves: 32)
Channel 33: Individual Clear channel (Default) (Slaves: 33)
Channel 34: Individual Clear channel (Default) (Slaves: 34)
Channel 35: Individual Clear channel (Default) (Slaves: 35)
Channel 36: Individual Clear channel (Default) (Slaves: 36)
Channel 37: Individual Clear channel (Default) (Slaves: 37)
Channel 38: Individual Clear channel (Default) (Slaves: 38)
Channel 39: Individual Clear channel (Default) (Slaves: 39)
Channel 40: Individual Clear channel (Default) (Slaves: 40)
Channel 41: Individual Clear channel (Default) (Slaves: 41)
Channel 42: Individual Clear channel (Default) (Slaves: 42)
Channel 43: Individual Clear channel (Default) (Slaves: 43)
Channel 44: Individual Clear channel (Default) (Slaves: 44)
Channel 45: Individual Clear channel (Default) (Slaves: 45)
Channel 46: Individual Clear channel (Default) (Slaves: 46)
Channel 47: Individual Clear channel (Default) (Slaves: 47)
Channel 48: D-channel (Default) (Slaves: 48)

48 channels configured.

ZT_SPANCONFIG failed on span 1: No such device or address (6)