[asterisk-users] Problem with E1

[Chetan Meshram]

Hi All, 

 I am facing problem with E1 line. I have installed Asterisk
(1.4.20.1) on a system with Digium TE420 card (Zaptel- 1.4.10) 

 But every
now and then I face problem of down E1's. The log show lot of entries like


 "pri_dchannel: PRI got event: HDLC Bad FCS (8) on Primary D-channel of
span 2" 

 This happens on a regular basis and the E1 becomes up after some
time. 

 My zaptel.conf is as follows: 

# Span 1: TE4/0/1 "T4XXP (PCI)
Card 0 Span 1" (MASTER)
span=1,1,0,ccs,hdb3
# termtype:
te
bchan=1-15,17-31
hardhdlc=16

# Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span
2"
span=2,2,0,ccs,hdb3
# termtype: te
bchan=32-46,48-62
hardhdlc=47

# Span
3: TE4/0/3 "T4XXP (PCI) Card 0 Span 3"
span=3,3,0,ccs,hdb3
# termtype:
te
bchan=63-77,79-93
hardhdlc=78

# Span 4: TE4/0/4 "T4XXP (PCI) Card 0
Span 4"
span=4,4,0,ccs,hdb3
# termtype:
te
bchan=94-108,110-124
hardhdlc=109

# Global data

loadzone =
us
defaultzone = us 

 Any advice what could be the problem..? 

 Thanks in
advance ! 

-Chetan Meshram
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