[asterisk-users] Problem with Sangoma A104 and euroisdn pri

Jaap Winius jwinius at umrk.to
Thu Apr 1 08:15:22 CDT 2010 

Hi all,

My problem boils down to these errors:

    ... Unable to create channel of type 'ZAP' (cause 34 -
        Circuit/channel congestion)
    == Everyone is busy/congested at this time

This is triggered by lines in extentions.conf such as:

    exten => _X.,1,Dial(ZAP/g1/${EXTEN},,W)

The system is CentOS v5.2 with Asterisk 1.4.23  
(druid-asterisk-1.4.23.1-2), a Sangoma A104 4-port card, Wanpipe  
v3.4.4 and Zaptel v1.4.12.1. The system is attached to a single  
EuroISDN PRI and is located in the Netherlands.

Besides the above error, I also noticed this:

    CLI> pri show span 1
    Primary D-channel: 16
    Status: Provisioned, Down, Active
    Switchtype: EuroISDN
    Type: CPE
    Window Length: 0/7
    Sentrej: 0
    SolicitFbit: 0
    Retrans: 0
    Busy: 0
    Overlap Dial: 0
    T200 Timer: 1000
    T203 Timer: 10000
    T305 Timer: 30000
    T308 Timer: 4000
    T309 Timer: -1
    T313 Timer: 4000
    N200 Counter: 3

The status needs to be "Provisioned, Up, Active."

Following Sangoma's instructions for debugging an Asterisk PRI span, I  
can confirm that there are only outgoing frames and that the D-channel  
messages in Asterisk are the same as what the Wanpipe drivers are  
seeing. So, assuming that my local telco (KPN Telecom) has activated  
the D-channel, what else could possibly be causing this problem?

Thanks,

Jaap

PS -- Below are my current configuration files and debugging output:

==begin zaptel.conf ====================

loadzone=us
defaultzone=us
span=1,0,0,ccs,hdb3
bchan=1-15,17-31
hardhdlc=16

==end zaptel.conf ======================

==begin wanpipe1.conf ==================

[devices]
wanpipe1 = WAN_AFT_TE1, Comment

[interfaces]
w1g1 = wanpipe1, , TDM_VOICE, Comment

[wanpipe1]
CARD_TYPE         = AFT
S514CPU         = A
CommPort         = PRI
AUTO_PCISLOT         = NO
PCISLOT         = 4
PCIBUS          = 13
FE_MEDIA        = E1
FE_LCODE        = HDB3
FE_FRAME        = NCRC4
FE_LINE                = 1
TE_CLOCK         = NORMAL
TE_REF_CLOCK    = 0
TE_SIG_MODE     = CCS
TE_HIGHIMPEDANCE        = NO
LBO                 = 120OH
FE_TXTRISTATE        = NO
MTU                 = 1500
UDPPORT         = 9000
TTL                = 255
IGNORE_FRONT_END = NO
TDMV_SPAN        = 1
TDMV_DCHAN        = 16
TDMV_HW_DTMF        = NO
TDMV_HW_FAX_DETECT = NO

[w1g1]
ACTIVE_CH        = ALL
TDMV_HWEC        = NO

==end wanpipe1.conf ====================

==begin zapata.conf ====================

[trunkgroups]

[channels]
context=default
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
relaxdtmf=yes
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
immediate=no

switchtype=euroisdn
context=default
group=1
signalling=pri_cpe
channel =>1-15,17-31

==end zapata.conf ======================

Here's some debugging output:

=== begin debug info ==================================================

# ztcfg -vv

Zaptel Version: 1.4.12.1
Echo Canceller: MG2
Configuration
======================

SPAN 1: CCS/HDB3 Build-out: 0 db (CSU)/0-133 feet (DSX-1)

Channel map:

Channel 01: Clear channel (Default) (Slaves: 01)
Channel 02: Clear channel (Default) (Slaves: 02)
Channel 03: Clear channel (Default) (Slaves: 03)
Channel 04: Clear channel (Default) (Slaves: 04)
Channel 05: Clear channel (Default) (Slaves: 05)
Channel 06: Clear channel (Default) (Slaves: 06)
Channel 07: Clear channel (Default) (Slaves: 07)
Channel 08: Clear channel (Default) (Slaves: 08)
Channel 09: Clear channel (Default) (Slaves: 09)
Channel 10: Clear channel (Default) (Slaves: 10)
Channel 11: Clear channel (Default) (Slaves: 11)
Channel 12: Clear channel (Default) (Slaves: 12)
Channel 13: Clear channel (Default) (Slaves: 13)
Channel 14: Clear channel (Default) (Slaves: 14)
Channel 15: Clear channel (Default) (Slaves: 15)
Channel 16: Hardware assisted D-channel (Default) (Slaves: 16)
Channel 17: Clear channel (Default) (Slaves: 17)
Channel 18: Clear channel (Default) (Slaves: 18)
Channel 19: Clear channel (Default) (Slaves: 19)
Channel 20: Clear channel (Default) (Slaves: 20)
Channel 21: Clear channel (Default) (Slaves: 21)
Channel 22: Clear channel (Default) (Slaves: 22)
Channel 23: Clear channel (Default) (Slaves: 23)
Channel 24: Clear channel (Default) (Slaves: 24)
Channel 25: Clear channel (Default) (Slaves: 25)
Channel 26: Clear channel (Default) (Slaves: 26)
Channel 27: Clear channel (Default) (Slaves: 27)
Channel 28: Clear channel (Default) (Slaves: 28)
Channel 29: Clear channel (Default) (Slaves: 29)
Channel 30: Clear channel (Default) (Slaves: 30)
Channel 31: Clear channel (Default) (Slaves: 31)

31 channels to configure.

# wanrouter status

Devices currently active:
         wanpipe1


Wanpipe Config:

Device name | Protocol Map | Adapter  | IRQ | Slot/IO | If's | CLK |  
Baud rate |
wanpipe1    | N/A          | A101/1D/A102/2D/4/4D/8| 169 | 4       | 1  
    | N/A | 0
   |

Wanrouter Status:

Device name | Protocol | Station | Status        |
wanpipe1    | AFT TE1  | N/A     | Connected     |

# ifconfig w1g1
w1g1      Link encap:Point-to-Point Protocol
           UP POINTOPOINT RUNNING NOARP  MTU:8  Metric:1
           RX packets:5281234 errors:0 dropped:0 overruns:0 frame:0
           TX packets:5281234 errors:0 dropped:0 overruns:0 carrier:4
           collisions:0 txqueuelen:100
           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
           Interrupt:169 Memory:f8b40000-f8b41fff

#

=== end debug info ====================================================

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