ztcfg -vvv output:

SPAN 1: CCS/HDB3 Build-out: 0 db (CSU)/0-133 feet (DSX-1)

Channel map:

Channel 01: Clear channel (Default) (Slaves: 01)
Channel 02: Clear channel (Default) (Slaves: 02)
Channel 03: Clear channel (Default) (Slaves: 03)
Channel 04: Clear channel (Default) (Slaves: 04)
Channel 05: Clear channel (Default) (Slaves: 05)
Channel 06: Clear channel (Default) (Slaves: 06)
Channel 07: Clear channel (Default) (Slaves: 07)
Channel 08: Clear channel (Default) (Slaves: 08)
Channel 09: Clear channel (Default) (Slaves: 09)
Channel 10: Clear channel (Default) (Slaves: 10)
Channel 11: Clear channel (Default) (Slaves: 11)
Channel 12: Clear channel (Default) (Slaves: 12)
Channel 13: Clear channel (Default) (Slaves: 13)
Channel 14: Clear channel (Default) (Slaves: 14)
Channel 15: Clear channel (Default) (Slaves: 15)
Channel 16: D-channel (Default) (Slaves: 16)
Channel 17: Clear channel (Default) (Slaves: 17)
Channel 18: Clear channel (Default) (Slaves: 18)
Channel 19: Clear channel (Default) (Slaves: 19)
Channel 20: Clear channel (Default) (Slaves: 20)
Channel 21: Clear channel (Default) (Slaves: 21)
Channel 22: Clear channel (Default) (Slaves: 22)
Channel 23: Clear channel (Default) (Slaves: 23)
Channel 24: Clear channel (Default) (Slaves: 24)
Channel 25: Clear channel (Default) (Slaves: 25)
Channel 26: Clear channel (Default) (Slaves: 26)
Channel 27: Clear channel (Default) (Slaves: 27)
Channel 28: Clear channel (Default) (Slaves: 28)
Channel 29: Clear channel (Default) (Slaves: 29)
Channel 30: Clear channel (Default) (Slaves: 30)
Channel 31: Clear channel (Default) (Slaves: 31)
Channel 32: FXS Kewlstart (Default) (Slaves: 32)
Channel 33: FXS Kewlstart (Default) (Slaves: 33)
Channel 34: FXS Kewlstart (Default) (Slaves: 34)
Channel 35: FXS Kewlstart (Default) (Slaves: 35)

35 channels configured.

Changing signalling on channel 32 from Unused to FXS Kewlstart
ZT_CHANCONFIG failed on channel 32: Invalid argument (22)
Did you forget that FXS interfaces are configured with FXO signalling
and that FXO interfaces use FXS signalling?








# cat zapata.conf | grep -v "#"
[channels]
language=en
progzone=il
context=from-pstn
usecallerid=yes
resetinterval=never
priindication=outofband
echocancel=no
echotraining=no
echocancelwhenbridged=no
faxdetect=incoming
group=0
context=from-pstn
switchtype=euroisdn
signalling=pri_cpe
channel => 1-15,17-31
group=1
context=from-zaptel
signalling=fxs_ks
echocancel=no
echotraining=no
callprogress=no
busydetect=yes
busycount=4
channel => 32-35





# cat ../zaptel.conf | grep -v "#"
span=1,0,0,ccs,hdb3,crc4

bchan=1-15
dchan=16
bchan=17-31
fxsks=32-35


loadzone = il
defaultzone=il