chan_dahdi.c MDL error

Hello!
Asterisk 1.6.2.11 with OpenVox D110P is connected to Siemens Hicom 300E.

DAHDI Version: 2.3.0.1 Echo Canceller: MG2


libpri version: 1.4.11.3

Sometimes i can't make a call.

Asterisk use 99,99% of CPU.

Here is log of errors!

[Sep 10 10:53:34] VERBOSE[21234] pbx.c: -- Executing [492215979139@siemens-in:1] Dial("DAHDI/1-1", "SIP/yaz-ic/00492215979139,,j") in new stack
[Sep 10 10:53:34] VERBOSE[21234] netsock.c: == Using SIP RTP CoS mark 5
[Sep 10 10:53:34] VERBOSE[21234] app_dial.c: -- Called yaz-ic/00492215979139
[Sep 10 11:20:33] WARNING[9349] chan_dahdi.c: Detected alarm on channel 2: Red Alarm
[Sep 10 11:20:33] WARNING[9349] chan_dahdi.c: Detected alarm on channel 3: Red Alarm
[Sep 10 11:20:33] WARNING[9349] chan_dahdi.c: Detected alarm on channel 4: Red Alarm
[Sep 10 11:20:40] NOTICE[9349] chan_dahdi.c: Alarm cleared on channel 2
[Sep 10 11:20:40] NOTICE[9349] chan_dahdi.c: Alarm cleared on channel 3
[Sep 10 11:20:40] NOTICE[9349] chan_dahdi.c: Alarm cleared on channel 4
[Sep 10 10:53:34] VERBOSE[9348] chan_dahdi.c: -- Accepting call from '31261701' to '492215979139' on channel 0/1, span 1
[Sep 10 11:25:54] NOTICE[9348] chan_dahdi.c: PRI got event: Alarm (4) on Primary D-channel of span 1
[Sep 10 11:25:54] WARNING[21234] chan_dahdi.c: Detected alarm on channel 1: No Alarm
[Sep 10 11:25:54] VERBOSE[21234] app_dial.c: -- No one is available to answer at this time (1:0/0/0)
[Sep 10 11:25:54] VERBOSE[21234] pbx.c: -- Executing [492215979139@siemens-in:2] NoOp("DAHDI/1-1", "") in new stack
[Sep 10 11:25:54] VERBOSE[21234] pbx.c: -- Auto fallthrough, channel 'DAHDI/1-1' status is 'NOANSWER'
[Sep 10 11:25:54] WARNING[9348] chan_dahdi.c: No D-channels available! Using Primary channel 16 as D-channel anyway!
[Sep 10 11:25:54] NOTICE[9348] chan_dahdi.c: PRI got event: No more alarm (5) on Primary D-channel of span 1
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] NOTICE[9348] chan_dahdi.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] NOTICE[9349] chan_dahdi.c: Alarm cleared on channel 1
[Sep 10 11:25:54] VERBOSE[21234] chan_dahdi.c: -- Hungup 'DAHDI/1-1'

[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: Trying to queue an MDL error when one is already scheduled
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: PTP MDL can't handle error of type F
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: MDL-ERROR (F), SABME in state 7
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: N(R) 1 not within ack window! Bad Bad Bad!
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: PTP MDL can't handle error of type J
[Sep 10 11:25:54] ERROR[9348] chan_dahdi.c: MDL-ERROR (J) in state 7
[Sep 10 11:25:54] VERBOSE[9348] chan_dahdi.c: == Primary D-Channel on span 1 up

[Sep 10 11:26:06] VERBOSE[9348] chan_dahdi.c: -- B-channel 0/1 successfully restarted on span 1
[Sep 10 11:26:06] VERBOSE[9348] chan_dahdi.c: -- B-channel 0/2 successfully restarted on span 1
[Sep 10 11:26:06] VERBOSE[9348] chan_dahdi.c: -- B-channel 0/3 successfully restarted on span 1
[Sep 10 11:26:06] VERBOSE[9348] chan_dahdi.c: -- B-channel 0/4 successfully restarted on span 1


cat /proc/interrupts
CPU0
0: 68 IO-APIC-edge timer
1: 2686 IO-APIC-edge i8042
8: 2 IO-APIC-edge rtc0
9: 0 IO-APIC-fasteoi acpi
12: 4 IO-APIC-edge i8042
17: 182 IO-APIC-fasteoi HDA Intel
18: 649677972 IO-APIC-fasteoi wcte11xp
21: 339156 IO-APIC-fasteoi sata_via
23: 11656331 IO-APIC-fasteoi eth0
223: 0 PCI-MSI-edge aerdrv
NMI: 0 Non-maskable interrupts
LOC: 2302196578 Local timer interrupts
RES: 0 Rescheduling interrupts
CAL: 0 function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
SPU: 0 Spurious interrupts
ERR: 0
MIS: 0


cat /etc/dahdi/system.conf
loadzone=ru
defaultzone=ru
span=1,0,0,ccs,hdb3,crc4
bchan=1-4
fcshdlc=16
alaw=1-4
echocanceller=mg2,1-4


cat /etc/asterisk/chan_dahdi.conf

[trunkgroups]


[channels]
context=siemens-in

pridialplan=unknown
resetinterval = 3600

usecallerid=yes
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes

group=1
callgroup=1
pickupgroup=1
switchtype = euroisdn
signalling = pri_net
group = 1
channel => 1-4


yaz*CLI> pri show span 1
Primary D-channel: 16
Status: Provisioned, Up, Active
Switchtype: EuroISDN
Type: Network
Overlap Dial: 0
Logical Channel Mapping: 0
Timer and counter settings:
N200: 3
N202: 3
K: 7
T200: 1000
T202: 10000
T203: 10000
T303: 4000
T305: 30000
T308: 4000
T309: 6000
T313: 4000
T-HOLD: 4000
T-RETRIEVE: 4000
T-RESPONSE: 4000
Overlap Recv: No



Haw can i repair this error?

Please send the SSH to me

It's production system.I can send you an output of any command.