[Asterisk-Dev] TE110p card with Euro ISDN

[J Thomas]

I posted this on users list. But think it could be a devel issue too.
Hence posting here again.

We are trying to use TE110p card for Euro ISDN with Ericsson AMS switch.
Weconsistently get one of the following errors:

PRI got event: HDLC Abort (6) on Primary D-channel of span 1
or
PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1

zaptel.conf file:
--------------------------------
span=1,0,0,ccs,hdb3,crc4
bchan=1-15,17-31
dchan=16
loadzone=us
defaultzone=us

--------------------------------

My partner and I have tried to find answer on google, IRC and even
digium tech support but no luck so far :-(

We observe the same behavior on FC3 as well as RH9, and on different
hardware too. One of them is Intel Motherboard with 3 GHz P4 processor
(FC3), the other is Supermicro with 2.4GHz Dual Xeon processor (RH9). 

Surprisingly, a similar machine with Supermicro motherboard works very
well with TE405p card.

I checked the interrupts etc. and there is no shared interrupt with the
card. Moreover, zttest shows:
----------------------------------------------
[root at ip-switch zaptel]# ./zttest
Opened pseudo zap interface, measuring accuracy...
100.000000% 100.000000% 100.000000% 100.000000% 100.000000% 100.000000%
100.000000% 
100.000000% 100.000000% 100.000000% 100.000000% 100.000000% 100.000000%
100.000000% 100.000000% 
100.000000% 100.000000% 100.000000% 100.000000% 
--- Results after 19 passes ---
Best: 100.000000 -- Worst: 100.000000
----------------------------------------------

We tried 4 different brand new cards, and all of them had the same
problem. Hence cannot dismiss this as a case of of bad card.

Hence I suspect the issue is at the signaling level or with the card's
driver rather than some interrupts getting lost. I could be completely
wrong though. 

Jens Kübler reported similar errors with TE110p with Siemens PBX cross
via ETSI protocol but he could still make calls in test setup.

I will raise a bug report once I confirm I am not doing something really
stupid.

Thanks,
-- jt