[asterisk-ss7] Bug in libss7 with CGB handling

[Gregory Massel]

Apologies; I'm using libss7-1.0.2, dahdi 2.6.1, asterisk 10.9.0-rc1.

It's a production environment, so have my concerns about running -trunk, 
but perhaps I should try.

Thanks for the link.

On 2012/10/10 11:01 AM, Kaloyan Kovachev wrote:
> Hi,
>   you have missed an important piece of information as libss7 and asterisk
> versions. Is this with the latest changes made ( see
> https://reviewboard.asterisk.org/r/1676/ and issue SS7-27)?
>
> On Wed, 10 Oct 2012 02:19:10 +0200, Gregory Massel <greg at csurf.co.za>
> wrote:
>> I've picked up a bug in libss7.
> <skiped>
>
>> The really annoying part of this is that I cannot locally block the CICs
>> because the command "ss7 block cic 1 17" because that command doesn't
>> let one specify which link within the linkset to apply to. I have
>> redundant links within the linkset but that command blocks both CIC 17
>> on link 1 of linkset 1 as well as CIC 17 on link 2 of linkset 1. We
>> really need the syntax to be something link "ss7 block cic <linkset>
>> <dpc>/<cic>" so that it can deal with identical CIC numbers to different
>> defaultdpc's within the same redundant linkset.
>>
> In the latest version cic and group blocking allows you to specify dpc, so
> it seems you are not using it. Those changes are not part of the Asterisk
> yet and testing/reporting bugs will be welcome, but it may (or) not be
> ready for production use.
>
>> All of this also highlights another major shortcoming of
>> libss7/chan_dahdi; they do not automatically issue CGB messages to the
>> other side and block CICs when the E1 goes into an alarm state. Now
>> we're relying on the remote end to detect the alarm and block the CICs
>> but that doesn't work properly because of a bug in the CGB processing...
>>
>> --Greg
>>
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