[Freeswitch-users] need help getting ISDN talking to Cisco 3845

[Michael Collins]

John,

Just curious - why are you using zaptel at all? Does it provide something
for you that the wanpipe drivers do not? I use Sangoma only with Sangoma
cards and I have a lot of success.

-MC

On Wed, Apr 8, 2009 at 3:19 PM, John Wehle <john at feith.com> wrote:

> > Okay, a few things. First off, the wanpipe2.conf file has a booboo.
>
> Don't think so.
>
> > This line is WRONG:
> > TDMV_DCHAN      = 0
>
> Not exactly.  My understanding is you can use either:
>
>  wanpipeX.conf: TDMV_DCHAN = 0
>  zaptel.conf: dchan = 24 (or in our case 48 since it's the second span)
>
> which means use zaptel to handle the d-channel hdlc or
>
>  wanpipeX.conf: TDMV_DCHAN = 24
>  zaptel.conf: hardhdlc = 24 (or in our case 48 since it's the second span)
>
> which means use wanpipe to handle the d-channel hdlc assuming the
> wanpipe driver has the necessary support (wanpipe on my platform
> doesn't).
>
> > Also, I recommend changing this line:
> > wbg1 = wanpipe2, , TDM_VOICE, Comment
> >
> > To this:
> > wbg1 = wanpipe2, , TDM_VOICE_API, Comment
>
> The sangoma voice API interface isn't available on my platform
> and shouldn't be necessary when using zaptel.
>
> > assuming that this is what you want then you will need to use
> > ozmod_libpri because the default OpenZAP PRI stack does not
> > currently support being the network side.
>
> Are you sure?  Openzap appears to contain implementations for
> both NT and TE.  The configuration file supports specifying
> either user or network for the mode.  Is the NT support
> currently nonfunctional?
>
> I had tried configuring the Cisco as the NT with similar
> results.
>
> > I don't see where timing is specified
>
> It's the same T1 which was being used for RBS between
> FreeSWITCH and the Cisco so that timing (etc) should
> be okay.  No errors are showing up at the physical
> level and the Cisco reports Layer 1 as active.
>
> The trace on the Cisco seems to show Layer 2 coming up
> (timestamps 22:53:44.264 through 22:54:21.760), then
> there's a long pause during which no Receive Ready
> frames are received from FreeSWITCH.  At this point
> the Cisco gets unhappy and marks Layer 2 as down.
>
> If nothing obvious comes to anyone's mind, then I'll
> simply need to trace through the FreeSWITCH ISDN code
> and see what's going on.
>
> -- John
> -------------------------------------------------------------------------
> |   Feith Systems  |   Voice: 1-215-646-8000  |  Email: john at feith.com  |
> |    John Wehle    |     Fax: 1-215-540-5495  |                         |
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