[Asterisk-Users] PRI E1 - HDLC Bad FCS / HDLC Abort errors

[Dushyanth Harinath]

Hello,

Iam trying to configure asterisk with a PRI E1 line. I got to a point
where incoming calls on PRI is landing on asterisk and asterisk
immediately starts throwing the below errors on the console. The call is
dropped at this point somehow.

Dec 12 15:02:57 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Bad FCS (8) on Primary D-channel of span 1
Dec 12 15:02:58 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Bad FCS (8) on Primary D-channel of span 1
Dec 12 15:02:59 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
Dec 12 15:03:00 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Bad FCS (8) on Primary D-channel of span 1
Dec 12 15:03:02 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Bad FCS (8) on Primary D-channel of span 1
Dec 12 15:03:03 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
Dec 12 15:03:04 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
Dec 12 15:03:04 NOTICE[5783]: chan_zap.c:7437 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1

*CLI> show version
Asterisk CVS-v1-0-11/08/05-01:22:43 built by root at ip-pbx on a i686
running Linux

>> /etc/zaptel.conf

span=1,1,0,cas,ami
;span=1,0,0,cas,ami ; have tried this too
bchan=1-15
dchan=16
bchan=17-31

>> /etc/asterisk/zapata.conf

; T110P - PRI Configuration
signalling=pri_cpe
;switchtype=national
;switchtype=5ess
switchtype=euroisdn
callerid=asreceived
group=1
context=di_mainmenu
channel => 1-15,17-31

>> cat /proc/zaptel/1
Span 1: WCT1/0 "Digium Wildcard TE110P T1/E1 Card 0" AMI/

           1 WCT1/0/1 Clear (In use)
           2 WCT1/0/2 Clear (In use)
           3 WCT1/0/3 Clear (In use)
           4 WCT1/0/4 Clear (In use)
           5 WCT1/0/5 Clear (In use)
           6 WCT1/0/6 Clear (In use)
           7 WCT1/0/7 Clear (In use)
           8 WCT1/0/8 Clear (In use)
           9 WCT1/0/9 Clear (In use)
          10 WCT1/0/10 Clear (In use)
          11 WCT1/0/11 Clear (In use)
          12 WCT1/0/12 Clear (In use)
          13 WCT1/0/13 Clear (In use)
          14 WCT1/0/14 Clear (In use)
          15 WCT1/0/15 Clear (In use)
          16 WCT1/0/16 HDLCFCS (In use)
          17 WCT1/0/17 Clear (In use)
          18 WCT1/0/18 Clear (In use)
          19 WCT1/0/19 Clear (In use)
          20 WCT1/0/20 Clear (In use)
          21 WCT1/0/21 Clear (In use)
          22 WCT1/0/22 Clear (In use)
          23 WCT1/0/23 Clear (In use)
          24 WCT1/0/24 Clear (In use)
          25 WCT1/0/25 Clear (In use)
          26 WCT1/0/26 Clear (In use)
          27 WCT1/0/27 Clear (In use)
          28 WCT1/0/28 Clear (In use)
          29 WCT1/0/29 Clear (In use)
          30 WCT1/0/30 Clear (In use)
          31 WCT1/0/31 Clear (In use)

>> /etc/asterisk/extensions.conf

[di_mainmenu]
exten => s,1,Answer ; Answer the line
exten => s,2,SetVar(mloop=0) ; main menu loop count
exten => s,3,SetVar(mloop=$[${mloop} + 1]) ; increment by 1 , first run
exten => s,4,DigitTimeout,5 ; Set Digit Timeout to 5 seconds
exten => s,5,ResponseTimeout,8 ; Set Response Timeout to 8 seconds
exten => s,6,(di_welcome)
exten => 1,1,Goto(di_sales,s,1)
exten => 2,1,Goto(di_techsupport,s,1)
exten => 3,1,Goto(di_hostingsupport,s,1)
exten => 4,1,Goto(di_billing,s,1)
exten => 5,1,Directory(default)
exten => 9,1,Goto(operator,0,1)
include => internal

Iam based in India and the PRI line is from TATA indicom. The switch iam
connected to is a Lucent 5ess. I have tried 5ess as the switchtype too
in zapata.conf and same errors.

I also get the below warning if i remove and put the PRI line into the
T110p.

Dec 12 14:26:30 WARNING[5783]: No D-channels available!  Using Primary
channel 16 as D-channel anyway!

zttool shows the PRI status as ok and there are no alarms.

Interrupts details are below. X server is not installed and i have
disabled dma on my disk.

[root at ip-pbx ~]# cat /proc/interrupts
           CPU0       CPU1
  0:     751204     690283    IO-APIC-edge  timer
  1:          9          0    IO-APIC-edge  i8042
  8:          1          0    IO-APIC-edge  rtc
  9:          0          0   IO-APIC-level  acpi
 14:       6203       1100    IO-APIC-edge  ide0
169:          0          0   IO-APIC-level  uhci_hcd
177:     682240     672161   IO-APIC-level  uhci_hcd, wctdm
185:          0          0   IO-APIC-level  uhci_hcd
193:     102135    1252274   IO-APIC-level  wcte11xp
201:    1257747     100020   IO-APIC-level  wctdm
217:         94       6793   IO-APIC-level  eth0
225:       8722          0   IO-APIC-level  eth1
NMI:          0          0
LOC:    1441441    1441440
ERR:          0
MIS:          0


# hdparm -v /dev/hda

/dev/hda:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 16383/255/63, sectors = 40020664320, start = 0

Wat could cause this problem ?

TIA
dushyanth