Elastix 2.0 does not support NT mode of BRI card

Hi all,
I use OpenVox B400P card, and set port 1 and port 2 as NT mode,port 3 and port 4 as TE mode. After installed Elastix-2.0, I load the driver of wcb4xxp. But the NT mode can not work.

The following files are my setting.

system.conf

Span 1: B4/0/1 “B4XXP (PCI) Card 0 Span 1” (MASTER) AMI/CCS

span=1,1,0,ccs,ami

termtype: te

bchan=1-2
hardhdlc=3
echocanceller=oslec,1-2

Span 2: B4/0/2 “B4XXP (PCI) Card 0 Span 2” AMI/CCS

span=2,2,0,ccs,ami

termtype: te

bchan=4-5
hardhdlc=6
echocanceller=oslec,4-5

Span 3: B4/0/3 “B4XXP (PCI) Card 0 Span 3” AMI/CCS RED

span=3,3,0,ccs,ami

termtype: te

bchan=7-8
hardhdlc=9
echocanceller=oslec,7-8

Span 4: B4/0/4 “B4XXP (PCI) Card 0 Span 4” AMI/CCS RED

span=4,4,0,ccs,ami

termtype: te

bchan=10-11
hardhdlc=12
echocanceller=oslec,10-11

Global data

loadzone = us
defaultzone = us

==========================================
chan_dahdi.conf

[trunkgroups]
[channels]
context=from-pstn
signalling=fxs_ks
rxwink=300 ; Atlas seems to use long (250ms) winks
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
;echocancel=yes
;echocancelwhenbridged=no
;faxdetect=incoming
echotraining=800
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1
;Uncomment these lines if you have problems with the disconection of your analog lines
;busydetect=yes
;busycount=3

immediate=no
#include dahdi-channels.conf
#include chan_dahdi_additional.conf

==========================================
dahdi-channels.conf

; Span 1: B4/0/1 “B4XXP (PCI) Card 0 Span 1” (MASTER) AMI/CCS
group=0,11
context=from-internal
switchtype = euroisdn
signalling = bri_net
channel => 1-2
context = default
group = 63
; Span 2: B4/0/2 “B4XXP (PCI) Card 0 Span 2” AMI/CCS
group=0,12
context=from-internal
switchtype = euroisdn
signalling = bri_net
channel => 4-5
context = default
group = 63
; Span 3: B4/0/3 “B4XXP (PCI) Card 0 Span 3” AMI/CCS RED
group=0,13
context=from-pstn
switchtype = euroisdn
signalling = bri_cpe
channel => 7-8
context = default
group = 63
; Span 4: B4/0/4 “B4XXP (PCI) Card 0 Span 4” AMI/CCS RED
group=0,14
context=from-pstn
switchtype = euroisdn
signalling = bri_cpe
channel => 10-11
context = default
group = 63

localhostCLI> dahdi show channels
Chan Extension Context Language MOH Interpret Blocked State
pseudo default default In Service
1 from-internal default In Service
2 from-internal default In Service
4 from-internal default In Service
5 from-internal default In Service
7 from-pstn default In Service
8 from-pstn default In Service
10 from-pstn default In Service
11 from-pstn default In Service
localhost
CLI>
localhost*CLI> pri show spans
PRI span 1/0: Provisioned, Down, Active
PRI span 2/0: Provisioned, Down, Active
PRI span 3/0: Provisioned, In Alarm, Down, Active
PRI span 4/0: Provisioned, In Alarm, Down, Active

I do not know what is missing.The NT mode always can not work.
Can anybody help me? I am looking forward to your help.
Thank you !

sunking