Zaptel problem

Hello,

I try to setup TDMoEth. I use ztd_eth. When I try to load my configuration I receive this message:

ztcfg -vv
Zaptel Version: 1.4.1
Echo Canceller: MG2
Configuration

Dynamic span 1: driver eth, addr eth0/00:30:48:75:9D:08/1, channels 31, timing 1

[…cut…]
Changing signalling on channel 15 from Unused to Clear channel
CAS signalling on span 1 conflicts with HDLC with FCS check on channel 16.

My zaptel.cfg

dynamic=eth,eth0/00:30:48:75:9D:08/1,31,1

span 1

bchan=1-15
dchan=16
bchan=17-31

loadzone=nl
defaultzone=nl


My zapata.conf
[trunkgroups]

[channels]
context=default
switchtype=euroisdn
pridialplan=dynamic
prilocaldialplan=dynamic
resetinterval = 3600
overlapdial=yes
priindication = outofband
pritimer => t200,1000
pritimer => t313,4000
usecallingpres=yes
echocancel=no
echocancelwhenbridged=no
rxgain=0.0
txgain=0.0
immediate=no

group=1
signalling=pri_cpe
amaflags=omit
txgain=0
rxgain=0
echocancel=no
echocancelwhenbridget=no

context=trunk-1
channel=1-15
channel=17-31

Where do I make a mistake?
I use zaptel 1.4.1.

Regards