[asterisk-ss7] MTP Link Down SLC (0) SLC (1)

Wed Feb 15 01:23:15 CST 2012

No i m not getting BAD FCS HDLC abort. In dahdi i m getting following 2
messages.

REL on channel (CIC 113) without owner!  This message i m getting on first
server too.

But below message came on the problematic server whenever mtp2 link down
message come

Duplicate IAM requested on CIC 2

On Wed, Feb 15, 2012 at 12:39 PM, Vashkar Chatterjee <vashkar at gmail.com>wrote:

> Check transmission for faults.  Do you get BAD FCS HDLC abort?  Check for
> the line error, code violation etc from dahdi maint tool
>
> -Vashkar
> On Feb 15, 2012 1:04 PM, "Bharat Lalcheta" <bharatlalcheta at gmail.com>
> wrote:
>
>> Thanks for reply.
>> Telco enabled crc and first server working fine on it.
>>
>> On Wed, Feb 15, 2012 at 12:24 PM, Vashkar Chatterjee <vashkar at gmail.com>wrote:
>>
>>> Checm if telco had crc enabled or not. If not turn off crc
>>> On Feb 15, 2012 12:45 PM, "Bharat Lalcheta" <bharatlalcheta at gmail.com>
>>> wrote:
>>>
>>>> Hii,
>>>>
>>>> I have 2 servers with dual core 3 GHz dual cpu with 2 GB RAM and having
>>>> 2 * TE410P digium, total 8 port for inbound calling.
>>>>
>>>> using asterisk-1.6.2.9, dahdi-2.5, libss7 SVN latest version
>>>>
>>>> Both server has same setup, 8 E1's with 2 Signalling channels from same
>>>> telco.
>>>>
>>>> follwoing is chan_dahdi.conf
>>>>
>>>> [channels]
>>>> group=0
>>>> linkset = 1
>>>> signalling = ss7
>>>> ss7type = itu
>>>> ss7_called_nai=national
>>>> ss7_calling_nai=national
>>>> context=ivrs
>>>> pointcode = 2
>>>> adjpointcode = XXXXX
>>>> defaultdpc = XXXXX
>>>> networkindicator=national
>>>> sigchan = 16
>>>> cicbeginswith=1
>>>> channel = 1-15
>>>> cicbeginswith = 17
>>>> channel = 17-31
>>>> sigchan = 47
>>>> cicbeginswith = 33
>>>> channel = 32-46
>>>> cicbeginswith = 49
>>>> channel = 48-62
>>>> cicbeginswith = 65
>>>> channel = 63-93
>>>> cicbeginswith = 97
>>>> channel = 94-124
>>>> cicbeginswith = 129
>>>> channel = 125-155
>>>> cicbeginswith = 161
>>>> channel = 156-186
>>>> cicbeginswith = 193
>>>> channel = 187-217
>>>> cicbeginswith = 225
>>>> channel = 218-248
>>>> following is the system.conf
>>>>
>>>> span=1,1,0,ccs,hdb3,crc4
>>>> bchan=1-15,17-31
>>>> mtp2=16
>>>> span=2,2,0,ccs,hdb3,crc4
>>>> bchan=32-46,48-62
>>>> mtp2=47
>>>> span=3,3,0,ccs,hdb3,crc4
>>>> bchan=63-93
>>>> span=4,4,0,ccs,hdb3,crc4
>>>> bchan=94-124
>>>> span=5,5,0,ccs,hdb3,crc4
>>>> bchan=125-155
>>>> span=6,6,0,ccs,hdb3,crc4
>>>> bchan=156-186
>>>> span=7,7,0,ccs,hdb3,crc4
>>>> bchan=187-217
>>>> span=8,8,0,ccs,hdb3,crc4
>>>> bchan=218-248
>>>> span=9,9,0,ccs,hdb3,crc4
>>>> bchan=249-279
>>>> span=10,10,0,ccs,hdb3,crc4
>>>> bchan=280-310
>>>> span=11,11,0,ccs,hdb3,crc4
>>>> bchan=311-341
>>>> span=12,12,0,ccs,hdb3,crc4
>>>> bchan=342-372
>>>> loadzone        = in
>>>> defaultzone     = in
>>>>
>>>> Now one server working fine with 8 E1s in regular or heavy traffic of
>>>> inbound.
>>>>
>>>> But in second server, its giving following warning at every 8-10 minutes
>>>> [Feb 15 12:04:52] WARNING[13950] chan_dahdi.c: MTP2 link down (SLC 1)
>>>> [Feb 15 12:04:52] WARNING[13950] chan_dahdi.c: MTP2 link down (SLC 0)
>>>> Also when traffic is high, i.e. more than 220-230 calls, suddenly all
>>>> calls get disconnected at same time. No other warning or error at that
>>>> time, only above MTP2 link down message there. No flactuation in E1 media
>>>> at my side or telco side.
>>>>
>>>> Please guide me to solve above problem.
>>>>
>>>>
>>>> Bharat Lalcheta
>>>>
>>>> --
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>>>>
>>>
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>>
>>
>>
>> --
>> Bharat Lalcheta
>>
>> --
>> _____________________________________________________________________
>> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>>
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>
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>
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-- 
Bharat Lalcheta
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