E1 <-> Asterisk <-> Nortel Matra C6501 Pabx

Hello,

I have successfully connected my E1 to my Asterisk box, and from Asterisk to my Nortel C6501 classic PABX. I can route call successfully both ways - but sometimes I get a busy signal, and often calls are lost. It seems that the longer it is running the more it deteriorates.

I am seeing excessive warnings/errors like this from Asterisk:

[code:1][Jul 11 12:23:46] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Bad FCS ( on Primary D-channel of span 1
[Jul 11 12:23:46] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Bad FCS ( on Primary D-channel of span 1
[Jul 11 12:23:47] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Jul 11 12:23:48] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Bad FCS ( on Primary D-channel of span 1
[Jul 11 12:23:49] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
!! Unknown IE 36 (cs6, Unknown Information Element)
[Jul 11 12:23:49] ERROR[98231]: chan_zap.c:8292 zt_pri_error: !! Got reject for frame 80, retransmitting frame 80 now, updating n_r!
[Jul 11 12:23:49] ERROR[98231]: chan_zap.c:8292 zt_pri_error: !! Got reject for frame 80, retransmitting frame 81 now, updating n_r!
[Jul 11 12:23:49] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Bad FCS ( on Primary D-channel of span 2
[Jul 11 12:23:49] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Bad FCS ( on Primary D-channel of span 1
[Jul 11 12:23:49] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Bad FCS ( on Primary D-channel of span 1
[Jul 11 12:23:49] NOTICE[98231]: chan_zap.c:8581 pri_dchannel: PRI got event: HDLC Bad FCS ( on Primary D-channel of span 1
[/code:1]

Here is my zaptel.conf:
[code:1]span=1,1,0,ccs,hdb3
bchan=1-15
dchan=16
span=2,0,0,ccs,hdb3
bchan=32-46
dchan=47
loadzone=fr
defaultzone=fr
[/code:1]

zapata.conf:
[code:1][channels]
context=pri-one-in
switchtype=euroisdn
signalling=pri_cpe
group=1
channel=>1-15
pridialplan = dynamic
prilocaldialplan = local

context=pri-two-in
switchtype=euroisdn
signalling=pri_net
group=2
channel=>32-46
pridialplan = dynamic
prilocaldialplan = local
[/code:1]

Both pri spans are up and provisioned!

I am running FreeBSD 7.0 on a HP Proliant DL380(G3). I have tried to other servers (NEC and IBM) and I have tried with other versions of FreeBSD and also Gentoo linux. In all scenarios, I am having the same problem!!!

I have a Openvox D410p quad-pri card.
asterisk-1.4.20
zaptel-1.4.6

I have also changed the cabling between the PABX and Asterisk - as I thought it might be a cabling problem.

I am running out of ideas - so any help would be greatly appreciated!!

Thanks,

Mike

Why you use slave clock on span 1, but master clock on span2?

also please send ssh account to This email address is being protected from spambots. You need JavaScript enabled to view it. if possible.

[code:1]span=1,1,0,ccs,hdb3
bchan=1-15
dchan=16
span=2,0,0,ccs,hdb3
bchan=32-46
dchan=47
loadzone=fr
defaultzone=fr
[/code:1]

SPAN1 = E1 (France Telecom)
SPAN2 = Legacy PABX (Nortel C6501)

I have configured span1 as master - and span2 will never be used as a source of timing.

With regards to ssh access - it is something we can do - but since the box is not connected to the E1 (due to this problem) it will have to be coordinated.

Regards,

Mike

I suggest you set the 2nd span to
span=2,2,0....

Because span 1 should be always connected, otherwise system is useless.

Can we test the pbx after your work time?

OK - I will try the span settings.

We can test today - as today is holiday in France - so I am alone in the office.

I have added you on MSN - please contact me when you have time.

Mike

could you send me some message? Too many ppl in my msn list.