[asterisk-ss7] CICS stay in pending state

Tue Feb 20 15:15:50 CST 2018

For me it happens every time. It is fixed by sending/receiving an RSC for
the affected CICs.
It seems to me this just isn't an important bug to fix (haven't bothered
anybody with the expertise to understand/fix it).
Due to this and a few other issues, I'm not currently running this version.

2018-02-20 11:29 GMT-03:00 Dovid Bender <dovid at telecurve.com>:

> Marcelo,
>
> That happens some times. Other times the entire second link wont work and
> I need to reset them. Most of time I am able to issue a reset and Asterisk
> free's up the CIC but on my first box it wont release the first CIC. On my
> second box the first CIC on each link is still pending. Seems like I am
> running into the same issue that you had. From what I understand there were
> a lot of improvements in lib libss7 2 and I am willing to sacrifice two
> CIC's. I would rather get the bug fixed if I could but I don't know where
> to start.
>
>
>
> On Mon, Feb 19, 2018 at 7:02 PM, Marcelo Pacheco <marcelo at m2j.com.br>
> wrote:
>
>> I detect a bug in the latest libss7 where for each group reset message,
>> the first CIC of each range doesn't get processed (staying pending), but
>> every other CIC does. Can you confirm that's what you see. For instance if
>> its a full E1, the first channel of the E1 stays pending. For an E1 with a
>> signalling link and CIC 16 skipped, channel 1 and channel 17 of the E1
>> stays pending.
>> I fixed by returning an old and trusted highly patched personal libss7
>> 1.0.0+and old asterisk (I cringe to have to use it, but its rock solid).
>>
>> 2018-02-19 0:56 GMT-03:00 Dovid Bender <dovid at telecurve.com>:
>>
>>> Hi,
>>>
>>> We have an issue where some CICs stay in pending and wont go into Idle.
>>> If we do a block the other side see's it. The same goes for an unblock. For
>>> some reason no matter what we do certain cic's (it seems to be random) will
>>> stay in pending while the remote side see's them as Idle. Some times a
>>> reset will free it up, other times it wont. When doing a reset the other
>>> side responds that the cic has been reset yet Asterisk wont free it up. Any
>>> idea whats going on?
>>>
>>> [root at ast01 asterisk]# asterisk -rx'ss7 show cics 1' | grep Pending
>>>     2   518      2      Pending
>>> [root at ast01 asterisk]#
>>>
>>>
>>> st01*CLI> ss7 reset cic 1 518 2
>>> Sent RSC for linkset 1 on CIC 2 DPC 518
>>> [1] Len = 11 [ fe ac 08 85 06 c2 98 20 02 00 12 ]
>>> [1] FSN: 44 FIB 1
>>> [1] BSN: 126 BIB 1
>>> [1] >[520:0] MSU
>>> [1] [ fe ac 08 ]
>>> [1]     Network Indicator: 2 Priority: 0 User Part: ISUP (5)
>>> [1]     [ 85 ]
>>> [1]     OPC 611 DPC 518 SLS 2
>>> [1]     [ 06 c2 98 20 ]
>>> [1]             CIC: 2
>>> [1]             [ 02 00 ]
>>> [1]             Message Type: RSC(0x12)
>>> [1]             [ 12 ]
>>> [1]
>>> [1] Len = 12 [ ac ff 09 85 63 82 81 20 02 00 10 00 ]
>>> [1] FSN: 127 FIB 1
>>> [1] BSN: 44 BIB 1
>>> [1] <[520:0] MSU
>>> [1] [ ac ff 09 ]
>>> [1]     Network Indicator: 2 Priority: 0 User Part: ISUP (5)
>>> [1]     [ 85 ]
>>> [1]     OPC 518 DPC 611 SLS 2
>>> [1]     [ 63 82 81 20 ]
>>> [1]             CIC: 2
>>> [1]             [ 02 00 ]
>>> [1]             Message Type: RLC(0x10)
>>> [1]             [ 10 ]
>>> [1]
>>> Linkset 1: Processing event: ISUP_EVENT_RLC
>>> ast01*CLI>
>>> ast01*CLI>
>>> ast01*CLI> quit
>>> Asterisk cleanly ending (0).
>>> Executing last minute cleanups
>>> [root at ast01 asterisk]# asterisk -rx'ss7 show cics 1' | grep Pending
>>>     2   518      2      Pending
>>> [root at ast01 asterisk]#
>>>
>>>
>>>
>>> TIA.
>>>
>>> Dovid
>>>
>>>
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>>
>>
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>
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