[asterisk-users] Calls on E1 TDMoE span are dropped at random

[Steve Totaro]

On Fri, May 9, 2008 at 5:32 PM, Florian Hackenberger
<f.hackenberger at chello.at> wrote:
> Hi!
>
> We are using a red-fone bridge (connected to an E1 line from the Telekom
> Austria) to provide TDMoE connectivity to our asterisk server (ubuntu
> 7.10, asterisk 1.4.10 from ubuntu, libpri 1.4.0-2, zaptel 1.4.9.2 from
> http://support.red-fone.com/downloads/zaptel/). We can establish
> outgoing calls and receive incoming calls from the POTS.
>        Sometimes however (no aparent triggers) all established calls suddenly
> drop, the span goes into YELLOW alarm and is restarted. Right after the
> restart we can use the lines as if nothing ever happened. Just sound
> quality seems to be decreased. The server is a real machine Intel Core
> 2 with a dedicated 3Com NIC for the red-fone bridge.
>        We have been in touch with red-fone support for hours. They suggested a
> loopback cable test (which suceeded, we had a few calls up for about 15
> hours) and then concluded that either the E1 line must have a problem
> or it has to be something with asterisk. Today we had a telco
> technician on-site who told us that the line works as expected and the
> configuration settings of the redfone bridge (framing, encoding,
> timing, etc.) are correct.
>        I'm attaching the logfile with span debug information, as well as the
> relevant snippets from our configuration files. Maybe someone could
> help us with a few suggestions, as we are a bit lost at this point.
>
> Cheers,
>        Florian
>
> === zaptel.conf ===
> dynamic=ethmf,eth4/00:50:C2:65:D2:1A/0,31,2
> dynamic=ethmf,eth4/00:50:C2:65:D2:1A/1,31,1
> bchan=1-15,17-31
> dchan=16
> bchan=32-46,48-62
> dchan=47
> alaw=1-62
> loadzone = us
> defaultzone=us
> ==============
>
> === redfone.conf ===
> [globals]
> fb=192.168.1.254
> port=1
> server=00:1C:C4:8E:8C:7B
>
> [span1]
> framing=ccs
> encoding=hdb3
> slave
> crc4
>
> [span2]
> framing=ccs
> encoding=hdb3
> slave
> crc4
> ==============
>
> === zapata.conf ===
> [trunkgroups]
>
> [channels]
> pridialplan=dynamic
> prilocaldialplan=local
> internationalprefix = 00
> nationalprefix = 0
> localprefix = 03142
> usecallerid=yes
> hidecallerid=no
> hidecalleridname=no
> usecallingpres=yes
> context=default
> group=0
> switchtype = euroisdn
> signalling = pri_cpe
> channel = 1-15,17-31,32-46,48-62
> ==============
>
>
> --
> DI Florian Hackenberger
> florian at hackenberger.at
> www.hackenberger.at
>
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
>

Try "resetinterval=never"