[asterisk-users] Problems with losing D-Channel on

Tue Nov 20 02:07:32 CST 2007

Hello all,

I got a problem at an asterisk server, with dropping calls, losing all
channels and reaktivating all channels and beeing back up.
This problem seems to occure randomly over the whole day, when it gots
traffic on the card.

After looking @ google I found several hints but none did work fine.

To avoid problems with the phone line (german E1) I called the provider, he
did a 45 min. route test with incoming and outgoing calls over all lines
without any problem over the whole time. 
I also got a phone call with the providers service partner for the S2M part.
He reset the line and putt he errorcounter to 0. After the test it was still
on 0. When we plugged in the card again, there were again errors on the
counter after ~ 5-10 minutes.

After this, i put the asterisk, zaptel and libpri versions to newest
versions, now it's working a bit better, but after 1 day fine work, it
crashes again all calls.

The system worked fine about 6 month now, but since 2 weeks I got the
problems.

Does anyone have any idea? The last points what is on my todo is to switch
the pci slot. The cable which connects card to E1 interface is also
switched.

Kind regards,

Eric

I got a snippet from the console, where the problem is occuring.

[Nov 16 15:57:09] ERROR[5499]: chan_zap.c:8178 zt_pri_error: Write to 39
failed: Unknown error 500
[Nov 16 15:57:09] ERROR[5499]: chan_zap.c:8178 zt_pri_error: Short write:
0/15 (Unknown error 500)
[Nov 16 15:57:09] WARNING[5499]: chan_zap.c:3822 zt_handle_event: Detected
alarm on channel 1: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 2: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 2
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 6: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 6
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 7: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 7
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 8: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 8
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 9: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 9
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 10: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 10
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 11: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 11
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 12: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 12
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 13: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 13
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 14: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 14
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 15: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 15
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 17: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 17
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 18: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 18
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 19: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 19
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 20: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 20
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 21: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 21
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 22: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 22
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 23: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 23
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 24: Red Alarm
[Nov 16 15:57:09] ERROR[5439]: chan_zap.c:8178 zt_pri_error: Write to 39
failed: Unknown error 500
[Nov 16 15:57:09] ERROR[5439]: chan_zap.c:8178 zt_pri_error: Short write:
0/15 (Unknown error 500)
[Nov 16 15:57:09] WARNING[5439]: chan_zap.c:3822 zt_handle_event: Detected
alarm on channel 3: Red Alarm
    -- Hungup 'Zap/3-1'
  == Spawn extension (default, 0237151510, 1) exited non-zero on
'IAX2/agent22-9'
    -- Hungup 'IAX2/agent22-9'
[Nov 16 15:57:09] ERROR[5522]: chan_zap.c:8178 zt_pri_error: Write to 39
failed: Unknown error 500
[Nov 16 15:57:09] ERROR[5522]: chan_zap.c:8178 zt_pri_error: Short write:
0/15 (Unknown error 500)
[Nov 16 15:57:09] WARNING[5522]: chan_zap.c:3822 zt_handle_event: Detected
alarm on channel 4: Red Alarm
    -- Hungup 'Zap/4-1'
[Nov 16 15:57:09] NOTICE[5522]: cdr.c:434 ast_cdr_free: CDR on channel
'Zap/4-1' not posted
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing [01624128667 at default:2] Hangup("IAX2/Agent5-29", "") in new
stack
  == Spawn extension (default, 01624128667, 2) exited non-zero on
'IAX2/Agent5-29'
    -- Hungup 'IAX2/Agent5-29'
[Nov 16 15:57:09] ERROR[5524]: chan_zap.c:8178 zt_pri_error: Write to 39
failed: Unknown error 500
[Nov 16 15:57:09] ERROR[5524]: chan_zap.c:8178 zt_pri_error: Short write:
0/15 (Unknown error 500)
[Nov 16 15:57:09] WARNING[5524]: chan_zap.c:3822 zt_handle_event: Detected
alarm on channel 5: Red Alarm
    -- Hungup 'Zap/5-1'
[Nov 16 15:57:09] NOTICE[5524]: cdr.c:434 ast_cdr_free: CDR on channel
'Zap/5-1' not posted
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing [076152278 at default:2] Hangup("IAX2/Agent26-28", "") in new
stack
  == Spawn extension (default, 076152278, 2) exited non-zero on
'IAX2/Agent26-28'
    -- Hungup 'IAX2/Agent26-28'
[Nov 16 15:57:09] NOTICE[2867]: chan_zap.c:8464 pri_dchannel: PRI got event:
Alarm (4) on Primary D-channel of span 1
[Nov 16 15:57:09] WARNING[2867]: chan_zap.c:2393 pri_find_dchan: No
D-channels available!  Using Primary channel 16 as D-channel anyway!
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 24
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 25: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 25
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 26: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 26
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 27: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 27
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 28: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 28
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 29: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 29
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 30: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 30
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:6672 handle_init_event: Detected
alarm on channel 31: Red Alarm
[Nov 16 15:57:09] WARNING[2868]: chan_zap.c:1464 zt_disable_ec: Unable to
disable echo cancellation on channel 31
[Nov 16 15:57:10] ERROR[2867]: chan_zap.c:8178 zt_pri_error: !! Got reject
for frame 101, retransmitting frame 101 now, updating n_r!
[Nov 16 15:57:10] ERROR[2867]: chan_zap.c:8178 zt_pri_error: !! Got reject
for frame 101, retransmitting frame 102 now, updating n_r!
[Nov 16 15:57:10] ERROR[2867]: chan_zap.c:8178 zt_pri_error: !! Got reject
for frame 101, retransmitting frame 103 now, updating n_r!
[Nov 16 15:57:10] ERROR[2867]: chan_zap.c:8178 zt_pri_error: !! Got reject
for frame 101, retransmitting frame 104 now, updating n_r!

Here are some system Information:

The installed card:
pci:0000:04:09.0     wcte11xp+    e159:0001 Digium Wildcard TE110P T1/E1
Board

Computer details:
Linux 2.6.22.9-61.fc6 #1 SMP Thu Sep 27 17:45:57 EDT 2007 i686 athlon i386
GNU/Linux
CPU: Intel Core2Duo 2.400 MHz E6600
MoBo: AB9Pro
RAM: 2GByte
Linux: Fedora Core 6
Asterisk: 1.4.13
Zaptel: 1.4.6
Libpri: 1.4.2

Configuration of zaptel.conf:

loadzone=de
defaultzone=de

span=1,1,0,ccs,hdb3,crc4
bchan=1-15,17-31
dchan=16

channels = 1

zapata.conf:

[trunkgroups]

[channels]
overlapdial = yes
language = de
switchtype = euroisdn
pridialplan = unknown
prilocaldialplan = unknown
usercallerid = no
hidecallerid = yes
callwaiting = yes
usecallingpres = yes
callwaitingcallerid = no
threewaycalling = no
transfer = yes
cancallforward = yes
callreturn = yes
echocancel = yes
echocancelwhenbridged = no
resetinterval = never
rxgain = 0.0
txgain = 0.0
group = 1
callgroup = 1
pickupgroup = 1
immediate = no

context = default
signalling = pri_cpe
channel => 1-15
channel => 17-31