[asterisk-users] PRI D-channel bouncing

Andrew Stewart astewart at notre1.com
Tue Aug 10 08:33:45 CDT 2010


I need some help getting a system running for one of my company's
plants.  I am running AsteriskNow 1.7 with Asterisk 1.6.2.10 and
FreePBX 2.8.0.2.

My D-Channel keeps bouncing.  The telecom tech told me he thought that
I might be using the wrong sync source, and I think I might have been,
but I changed DAHDI system.conf to "span=1,1,0,ESF,B8ZS"  (from
"span=1,0,0,ESF,B8ZS") and I am still having the same problem.
(Although, the FreePBX DAHDI page only allows me to select "0" in the
"Sync/Clock Source" field.  "0" is the only option in the drop down.)

dahdi_tool is showing some "IRQ Misses" and is listing "Sync Source"
at the"Wildcard TE121 Card 0."  But, dahdi_scan is returning
"syncsrc=1"

*********************************************************************************************************************
  == Primary D-Channel on span 1 up
  == Primary D-Channel on span 1 down
  == Primary D-Channel on span 1 up
  == Primary D-Channel on span 1 down
  == Primary D-Channel on span 1 up
  == Primary D-Channel on span 1 down
  == Primary D-Channel on span 1 up
  == Primary D-Channel on span 1 down
  == Primary D-Channel on span 1 up
  == Primary D-Channel on span 1 down
  == Primary D-Channel on span 1 up
gch-asterisknow01*CLI>
*********************************************************************************************************************
[root at gch-asterisknow01 ~]# cat /etc/dahdi/system.conf
span=1,1,0,ESF,B8ZS
bchan=1-15
dchan=24
loadzone=us
defaultzone=us
[root at gch-asterisknow01 ~]#
*********************************************************************************************************************
[root at gch-asterisknow01 ~]# cat /etc/asterisk/chan_dahdi_groups.conf
;--------------------------------------------------------------------------------;
; Do NOT edit this file as it is auto-generated by FreePBX. All
modifications to ;
; this file must be done via the web gui. There are alternative files
to make    ;
; custom modifications, details at:
http://freepbx.org/configuration_files       ;
;--------------------------------------------------------------------------------;
;


; [span_1]
signalling=pri_net
switchtype=national
pridialplan=national
prilocaldialplan=national
group=0
context=from-pstn
channel => 1-15
[root at gch-asterisknow01 ~]#
*********************************************************************************************************************
gch-asterisknow01*CLI> pri show spans
PRI span 1/0: Provisioned, Up, Active
*********************************************************************************************************************
gch-asterisknow01*CLI> dahdi show channels
   Chan Extension  Context         Language   MOH Interpret
Blocked    State
 pseudo            default                    default
       In Service
      1            from-pstn                  default
       In Service
      2            from-pstn                  default
       In Service
      3            from-pstn                  default
       In Service
      4            from-pstn                  default
       In Service
      5            from-pstn                  default
       In Service
      6            from-pstn                  default
       In Service
      7            from-pstn                  default
       In Service
      8            from-pstn                  default
       In Service
      9            from-pstn                  default
       In Service
     10            from-pstn                  default
       In Service
     11            from-pstn                  default
       In Service
     12            from-pstn                  default
       In Service
     13            from-pstn                  default
       In Service
     14            from-pstn                  default
       In Service
     15            from-pstn                  default
       In Service 0 db (CSU)/0-133 feet (DSX-1)
*********************************************************************************************************************
[root at gch-asterisknow01 ~]# dahdi_cfg -vv
DAHDI Tools Version - 2.3.0

DAHDI Version: 2.3.0.1
Echo Canceller(s):
Configuration
======================

SPAN 1: ESF/B8ZS Build-out: 0 db (CSU)/0-133 feet (DSX-1)

Channel map:

Channel 01: Clear channel (Default) (Echo Canceler: none) (Slaves: 01)
Channel 02: Clear channel (Default) (Echo Canceler: none) (Slaves: 02)
Channel 03: Clear channel (Default) (Echo Canceler: none) (Slaves: 03)
Channel 04: Clear channel (Default) (Echo Canceler: none) (Slaves: 04)
Channel 05: Clear channel (Default) (Echo Canceler: none) (Slaves: 05)
Channel 06: Clear channel (Default) (Echo Canceler: none) (Slaves: 06)
Channel 07: Clear channel (Default) (Echo Canceler: none) (Slaves: 07)
Channel 08: Clear channel (Default) (Echo Canceler: none) (Slaves: 08)
Channel 09: Clear channel (Default) (Echo Canceler: none) (Slaves: 09)
Channel 10: Clear channel (Default) (Echo Canceler: none) (Slaves: 10)
Channel 11: Clear channel (Default) (Echo Canceler: none) (Slaves: 11)
Channel 12: Clear channel (Default) (Echo Canceler: none) (Slaves: 12)
Channel 13: Clear channel (Default) (Echo Canceler: none) (Slaves: 13)
Channel 14: Clear channel (Default) (Echo Canceler: none) (Slaves: 14)
Channel 15: Clear channel (Default) (Echo Canceler: none) (Slaves: 15)
Channel 24: D-channel (Default) (Echo Canceler: none) (Slaves: 24)

16 channels to configure.

Setting echocan for channel 1 to none
Setting echocan for channel 2 to none
Setting echocan for channel 3 to none
Setting echocan for channel 4 to none
Setting echocan for channel 5 to none
Setting echocan for channel 6 to none
Setting echocan for channel 7 to none
Setting echocan for channel 8 to none
Setting echocan for channel 9 to none
Setting echocan for channel 10 to none
Setting echocan for channel 11 to none
Setting echocan for channel 12 to none
Setting echocan for channel 13 to none
Setting echocan for channel 14 to none
Setting echocan for channel 15 to none
Setting echocan for channel 24 to none
*********************************************************************************************************************
[root at gch-asterisknow01 ~]# dahdi_scan
[1]
active=yes
alarms=OK
description=Wildcard TE121 Card 0
name=WCT1/0
manufacturer=Digium
devicetype=Wildcard TE121 (VPMADT032)
location=PCI Bus 09 Slot 09
basechan=1
totchans=24
irq=98
type=digital-T1
syncsrc=1
lbo=0 db (CSU)/0-133 feet (DSX-1)
coding_opts=B8ZS,AMI
framing_opts=ESF,D4
coding=B8ZS
framing=ESF
*********************************************************************************************************************
[root at gch-asterisknow01 ~]# dahdi_tool

 DAHDI Tool (C)2002-2008 Digium, Inc.

   ââââââââââââââââââââââ⤠DAHDI Telephony Interfaces âââââââââââââââââââââââ
   â                                                                        â
   â     Alarms          Span                                               â
   â     OK              Wildcard TE121 Card 0                           â  â
   â                                                                     â®  â
   â                                                                     â  â
   â                                                                     â  â
   â                                                                     â  â
   â                                                                     â  â
   â                                                                     â  â
   â                                                                     â  â
   â                                                                     â® â
   â                                                                     â  â
   â                                                                        â
   â                                                                        â
   â          ââââââââââ                              ââââââââ              â
   â          â Select â                              â Quit â              â
   â          ââââââââââ                              ââââââââ              â
   â                                                                        â
   ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ

Span 1: 24 total channels, 16 configured                    F1=Details F10=Quit

DAHDI Tool (C)2002-2008 Digium, Inc.
         ââââââââââââââââââ⤠Wildcard TE121 Card 0 ââââââââââââââââââââ
   âââââââ                                                            â ââââââ
   â     â                                                            â     â
   â     â    Current Alarms:     No alarms.                          â     â
   â     â    Sync Source:        Wildcard TE121 Card 0               â  â  â
   â     â    IRQ Misses:               1                             â  â®  â
   â     â    Bipolar Viol:             0                             â  â  â
   â     â    Tx/Rx Levels:         0/  0                             â  â  â
   â     â    Total/Conf/Act:      24/ 16/  0                         â  â  â
   â     â                 111111111122222                ââââââââ    â  â  â
   â     â        123456789012345678901234                â Back â    â  â  â
   â     â    TxA ---------------        -                ââââââââ    â  â  â
   â     â    TxB ---------------        -                            â  â® â
   â     â    TxC ---------------        -                            â  â  â
   â     â    TxD ---------------        -                            â     â
   â     â                                                            â     â
   â     â    RxA ---------------        -                            â     â
   â     â    RxB ---------------        -                            â     â
   â     â    RxC ---------------        -                            â     â
   â     â    RxD ---------------        -                            â     â
   âââââââ                                                            â âââââ
         ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ
Wildcard TE121 Card 0                                                  F10=Back






-- 
Andrew Stewart
astewart at notre1.com



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