Jumper settings for 120 Ohm connection

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Harald Welte laforge at gnumonks.org
Fri Feb 27 23:35:29 UTC 2009


Hi Holger!

On Tue, Feb 24, 2009 at 04:22:30PM +0100, Holger Adams wrote:
 
> I'm just trying to connect the E-1 host card to the BS-11, but I can't
> get it work. The serial connection works fine, I'm also seeing the
> "Abis-link: Restoring" message.

this is strange, indeed.  I have not yet seen this.

> My hardware configuration:
> 
> 1)  I removed the green jumpers TB01 - TB04
> 2)  Jumper settings below the Twinax-board:  1-4 ON,  5-8 OFF
> 
> 3)  HFC-E1: NT Mode, Config A (all jumpers on the left side to the left)
> 4)  'hfcmulti' modprobed with 'dslot=1'
> 5)  Forced the BS-11 to use correct TEI and E1 slot by using 'bs11_config'

did you verify the settings by using 'bs11_config query'?  Is it really using
the full timeslot 1 with TEI 25?  I have seen a number of BS-11 with different
default configuration.

did you also apply the kernel patch for mISDN and actually use the
recompiled/patched mISDN_core and hfcmulti modules?

> Have I missed something? I put a scope upon the rx/tx pins - traffic
> flows into both directions, so I think there's no collision (tx->tx, rx->rx)

I think the TEI layer is not coming up in this case, so it is more a logical
than a physical layer problem.

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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