[asterisk-users] Re: ZapHFC & quadBRI D-Channel going down randomly

[Alberto Pastore]

asterisk ha scritto:
> On most traditional pabx's it's possible to set layer 1 to permanent or
> call. It sounds like your system is configured for permanent and your lines
> to call. How you would set this on asterisk I have no idea.
>
> fadge
>
>   
The question is: is it possible I am the only one with such
problems on all asterisk boxes on different sites and
different ISDN lines? I've googled around on many forums
but no one seems to have this one.

The old replaced PBXs had layer 1 set for call, as you say,
and they showed no problems at all.

With asterisk as a PBX, every 2-3 hours, you cannot dial out
for 5 to 15 minutes then everything gets back to normal
(no idea about what triggers the return to working state).
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Alberto
> Pastore
> Sent: 16 October 2006 17:26
> To: asterisk-users at lists.digium.com
> Subject: [asterisk-users] ZapHFC & quadBRI D-Channel going down randomly
>
> Hi.
>
> I'm running some asterisk boxes on different sites,
> some equipped with a couple of ZapHFC cards, others with
> Junghanns quadBRI cards.
>
> All boxes were compiled with Asterisk 1.2.10 (libpri 1.2.3 zaptel 1.2.6)
> and bristuff 0.3.0 pre 1s, distribution is Fedora Core 4 with
> kernel 2.6.17.3
>
> The cards are connected to Telecom Italia's NT1/NT1+ S/T lines;
> some of them are point-to-point, others are point-to-multipoint.
>
> I keep getting always the same problem: after some hours of regular
> working, some boxes report the usual message
>
>
>     Primary D-Channel on span <n> down
>
>
> (where <n> is different every time, depending on the number of
> active bri spans)
>
> I've read on previous postings that having layer 1 down on ptmp
> spans is normal.
>
> However after getting a down message (on ptp spans too!) I'm no
> more able to place outgoing calls on that span, until
> I restart asterisk & zaptel drivers.
>
> Sometimes, they get back working by themselves (with the related
> "span up" notification) after a random time period.
>
> During the "down" period, incoming calls are regularly served.
> However these calls do not change the status of the span, i.e.
> as soon as the calls are hung up, the span gets down again.
>
> I've tried to capture the dialog between the card and NT1 equipment,
> and during the "down" state, I got this repeated over and over:
>
>
> Sending Set Asynchronous Balanced Mode Extended
>   [ 00 8b 7f ]
> Unnumbered frame:
> SAPI: 00  C/R: 0 EA: 0
>   TEI: 069        EA: 1
>    M3: 3   P/F: 1 M2: 3 11: 3  [ SABME (set asynchronous balanced mode 
> extended) ]
>    == Primary D-Channel on span 1 down
>
>
> In zapata.conf I'm pretty sure I've always set the correct signalling 
> settings
> (switchtype = euroisdn, signalling = bri_cpe_ptmp or bri_cpe depending 
> on the case)
>
> In /etc/zaptel.conf, I've tried many combinations with no difference; my 
> current
> settings are like this:
>
> span=1,1,0,ccs,ami
> bchan=1-2
> dchan=3
>
> span=2,1,0,ccs,ami
> bchan=4-5
> dchan=6
>
> etc....
>
>
> Any clue?
>
> Thanks,
> Alberto
>
> --
> Alberto Pastore
> B-Press Srl - Gruppo MSoft
> P.IVA 01697420030
> P.le Lombardia, 4 - 28100 Novara - Italy
> Tel. 0321-499508 
> Fax 0321-492974
> http://www.msoft.it
>
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-- 
--
Alberto Pastore
B-Press Srl - Gruppo MSoft
P.IVA 01697420030
P.le Lombardia, 4 - 28100 Novara - Italy
Tel. 0321-499508 
Fax 0321-492974
http://www.msoft.it