PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1

Hi , Guys,
I think i am facing to much problem theses days ( or these days i caught with bad luck ), as u all know these days i tried to stable mine trixbox in mine side.

Before yesterday everything was fine, i have changed only thing in zapata-channels.conf and add [resetinterval = 10800] so that mine channel restart in every two hours rather then every hours, i go through the form some said it's hardware error , some said it's pri error some said it is zapata.conf error.
can some assist me what to check ?

i got this error from 5:30AM to 8:36AM continuously (this this our office was closed), and when we make first call from asterisk, this error gone. so i am posting mine zapatpa files and i think that able u to see the configuration...

1. this is error
================================================================

[Jul 9 05:39:26] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:26] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:26] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1
[Jul 9 05:39:27] NOTICE[3301] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1

=======================================================================

2. zapata-channels.conf

==================================================================
; Autogenerated by /usr/sbin/genzaptelconf -- do not hand edit
; Zaptel Channels Configurations (zapata.conf)
;
; This is not intended to be a complete zapata.conf. Rather, it is intended
; to be #include-d by /etc/zapata.conf that will include the global settings
;

; Span 1: WCE1/0 "PhonicEQ Inc. E100P RAVEN E1/PRA Card 0" (MASTER)
group=0,11
context=from-pstn
switchtype = euroisdn
signalling = pri_cpe
pridialplan = local
resetinterval = 10800
channel => 1-15,17-31
group=
context=default
==========================================================

3. Zapata.conf
----------------------------------------------------------------------
;
; Zapata telephony interface
;
; Configuration file

[trunkgroups]

[channels]

language=en
context=from-zaptel
signalling=fxs_ks
rxwink=300 ; Atlas seems to use long (250ms) winks
;
; Whether or not to do distinctive ring detection on FXO lines
;
;usedistinctiveringdetection=yes

usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
;echotraining=800
rxgain=0.0
txgain=0.0
group=0
callgroup=1
pickupgroup=1
immediate=no

;faxdetect=both
faxdetect=incoming
;faxdetect=outgoing
;faxdetect=no

;Include genzaptelconf configs
#include zapata-channels.conf
#include zapata-auto.conf

group=1

;Include AMP configs

#include zapata_additional.conf
--------------------------------------------------------------------------------------------

sorry for that , i have asked too many questions :(

Thanks