[asterisk-ss7] Alignment problem with libss7

[Kaloyan Kovachev]

Who is providing the clock in your setup?

span=1,1,0,ccs,hdb3,crc4 - on Asterisk machine means it expects the clock
from remote, but if Mobicent does not provide clock you need:

span=1,0,0,ccs,hdb3,crc4

On Mon, 1 Oct 2012 11:29:13 +0200, Victor Neiman
<victor at blacksheepdev.co.za> wrote:
> HI Mitul,
> 
> thanks for the suggestion, tried it, does not seem to help, in fact
getting
> an additional error message now in Asterisk:
> 
> 
> [Oct  1 13:35:52] ERROR[26703]: chan_dahdi.c:13966 dahdi_ss7_error: [1]
>> Received MSU in invalid state 1
>>
>>
> Regards
> Vic
> 
> On Mon, Oct 1, 2012 at 11:11 AM, Mitul Limbani <mitul at enterux.com>
wrote:
> 
>> You need to run signalling on mobicent side too n not have all bearer
>> channels. bchan=2-31, dchan=1 on Mobicent. Fix that side ... and
dchan=1
>> instead of mtp2=1 on asterisk, Everything else looks ok on asterisk
side.
>>
>> Mitul
>>
>> On Mon, Oct 1, 2012 at 12:41 PM, Victor Neiman
>> <victor at blacksheepdev.co.za
>> > wrote:
>>
>>> Hi,
>>>
>>> I'm trying to get SS7 communication between Asterisk 1.8.16.0 which
has
>>> libss7 installed and the Mobicents Signalling Gateway , using Sangoma
>>> A101
>>> hardware in two boxes.  Both boxes are using wanrouter and dahdi. One
>>> box
>>> is running Asterisk, the other Mobicents. I have been corresponding
>>> closely
>>> with people at Mobicents to get the configuration right for their
>>> software
>>> and am fairly sure it is correct. The problem is that when I start up
>>> the
>>> Mobicents Signalling Gateway, Asterisk on the other side immediately
>>> fills
>>> up with these errors:
>>>
>>> [Oct  1 10:55:46] NOTICE[19825]: chan_dahdi.c:3437
>>>> my_handle_link_exception: SS7 got event: HDLC Abort(6) on span 1/0
>>>
>>>
>>>
>>> The box that is running the SGW has the following
>>> /etc/dahdi/system.conf:
>>>
>>> #autogenerated by /usr/sbin/wancfg_dahdi do not hand edit
>>>> #autogenrated on 2012-09-28
>>>> #Dahdi Channels Configurations
>>>> #For detailed Dahdi options, view /etc/dahdi/system.conf.bak
>>>> loadzone=us
>>>> defaultzone=us
>>>>
>>>> #Sangoma A101 port 1 [slot:4 bus:5 span:1] <wanpipe1>
>>>> span=1,1,0,ccs,hdb3,crc4
>>>> bchan=1-31
>>>>
>>>
>>> This config comes straight from the guys at Mobicents. All channels
are
>>> bchan.
>>>
>>> The Asterisk side looks like this, /etc/dahdi/sysem.conf
>>>
>>> #autogenerated by /usr/sbin/wancfg_dahdi do not hand edit
>>>> #autogenrated on 2012-09-28
>>>> #Dahdi Channels Configurations
>>>> #For detailed Dahdi options, view /etc/dahdi/system.conf.bak
>>>> loadzone=us
>>>> defaultzone=us
>>>>
>>>> #Sangoma A101 port 1 [slot:4 bus:2 span:1] <wanpipe1>
>>>> span=1,0,0,ccs,hdb3,crc4
>>>> bchan=2-31
>>>> mtp2=1
>>>>
>>>
>>>  /etc/asterisk/chan_dahdi,conf looks like this:
>>>
>>> ;autogenerated by /usr/sbin/wancfg_dahdi do not hand edit
>>>> ;autogenrated on 2012-09-28
>>>> ;Dahdi Channels Configurations
>>>> ;For detailed Dahdi options, view /etc/asterisk/chan_dahdi.conf.bak
>>>>
>>>> [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
>>>>
>>>> ;Sangoma A102 port 1 [slot:2 bus:6 span:1] <wanpipe1>
>>>> context=from-pstn
>>>> group=0
>>>> echocancel=no
>>>> signaling=ss7 ;this is ss7 signaling
>>>> ss7type=itu ;using the ITU variant
>>>> ss7_called_nai=dynamic ;NAI for outgoing calls
>>>> ss7_calling_nai=dynamic ;NAI for incoming calls
>>>> ss7_internationalprefix=00 ;international prefix value for incoming
>>>> calls
>>>> ss7_nationalprefix=0 ;national prefix value for incoming calls
>>>> ss7_subscriberprefix= ;subscriber prefix value for incoming calls
>>>> ss7_unknownprefix= ;unknown prefix value for incoming calls
>>>> ss7_explictacm=yes ;ACM is send as soon as call enters the dial
>>>> plan...may not accepted yet though
>>>> linkset=1 ;arbitrary name for this set of channels
>>>> pointcode=1 ;the point code for this system...aka SPC
>>>> adjpointcode=2 ;the point code for the system that we are signaling
>>>> to... aka APC
>>>> defaultdpc=2 ;the point code for the system that the CICs will be
>>>> negotiated with...aka DPC
>>>> networkindicator=international ;NI value for MTP3
>>>> cicbeginswith=1 ;the starting value of the CICs
>>>> channel=2-31 ;the channels that are CICs
>>>> sigchan=1 ;the signaling channel
>>>>
>>>
>>> Any help would be appreciated. Feels like I'm missing something in the
>>> configs but I just can't seem to pin it down.
>>>
>>> Regards
>>> Victor
>>>
>>>
>>>
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>>
>>
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