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[kernel at tekno-soft.it]

Hi All,

I've a BT Versatility PBX that I want to connect to my asterisk 11.9.0 box via BRI port in NT
mode but actually I wasn't able to get it working. I've another standalone PBX, it's a
Panasonic model, which works fine connected to the same port. The BT connected to a UK
BT BRI line works quite fine after roughly a minute once connected. The PBX can be
seen at http://www.telephone-engineer.com/downloads/versatility/versatility-installation.pdf

Putting the pri span in debug mode I can see the following log continuously scrolling
and the PBX never synchronize with the openvox B400P card:

PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment)
PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned)
PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3)
PRI Span: 1 SAPI/TEI=0/0 Kick starting link
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment)
PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned)
PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3)
PRI Span: 1 SAPI/TEI=0/0 Kick starting link
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment)
PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned)
PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3)
PRI Span: 1 SAPI/TEI=0/0 Kick starting link
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment)
PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned)
PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3)
PRI Span: 1 SAPI/TEI=0/0 Kick starting link
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment)
PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned)
PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3)
PRI Span: 1 SAPI/TEI=0/0 Kick starting link
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment)
PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned)
PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3)
PRI Span: 1 SAPI/TEI=0/0 Kick starting link
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment)
PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned)
PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3)
PRI Span: 1 SAPI/TEI=0/0 Kick starting link
PRI Span: 1 TEI=0 Sending SABME
PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
PRI Span: 1 TEI=0 Sending SABME

Below you can find the /etc/dahdi/system.conf
# Span 1: B4/0/1 "B4XXP (PCI) Card 0 Span 1" (MASTER) AMI/CCS RED
span=1,0,0,ccs,ami
# termtype: nt
bchan=1-2
hardhdlc=3
echocanceller=mg2,1-2

# Span 2: B4/0/2 "B4XXP (PCI) Card 0 Span 2" AMI/CCS RED
span=2,0,0,ccs,ami
# termtype: nt
bchan=4-5
hardhdlc=6
echocanceller=mg2,4-5

# Span 3: B4/0/3 "B4XXP (PCI) Card 0 Span 3" AMI/CCS RED
span=3,1,0,ccs,ami
# termtype: te
bchan=7-8
hardhdlc=9
echocanceller=mg2,7-8

# Span 4: B4/0/4 "B4XXP (PCI) Card 0 Span 4" AMI/CCS RED
span=4,2,0,ccs,ami
# termtype: te
bchan=10-11
hardhdlc=12
echocanceller=mg2,10-11

# Global data

loadzone = uk
defaultzone = uk

the /etc/asterisk/dahdi-channels.conf
group=0
context=from-PBX
overlapdial=yes
switchtype = euroisdn
signalling = bri_net
channel => 1-2
context=from-PBX

; Span 2: B4/0/2 "B4XXP (PCI) Card 0 Span 2" AMI/CCS RED
group=0
context=from-PBX
overlapdial=yes
switchtype = euroisdn
signalling = bri_net
channel => 4-5
context=from-PBX

; Span 3: B4/0/3 "B4XXP (PCI) Card 0 Span 3" AMI/CCS RED
group=1
context=from-NT1
overlapdial=yes
callerid=asreceived
switchtype = euroisdn
signalling = bri_cpe
channel => 7-8
context=from-NT1

; Span 4: B4/0/4 "B4XXP (PCI) Card 0 Span 4" AMI/CCS RED
group=1
context=from-NT1
overlapdial=yes
callerid=asreceived
switchtype = euroisdn
signalling = bri_cpe
channel => 10-11
context=from-NT1

the /etc/asterisk/chan_dahdi.conf

has the default settings and include the dahdi-channels.conf at the end.

Does anyone know how can I solve this problem?

Thanks in advance.
Roberto Fichera.

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[rmudgett at digium.com]

On Fri, Aug 1, 2014 at 12:03 PM, Roberto Fichera <kernel@tekno-soft.it (kernel@tekno-soft.it)> wrote:

[kernel at tekno-soft.it]

On Fri, 1 Aug 2014 12:39:18 -0500, Richard Mudgett wrote:

[rmudgett at digium.com]

On Fri, Aug 1, 2014 at 1:26 PM, <kernel@tekno-soft.it (kernel@tekno-soft.it)> wrote:

[mcgrathr at mail2web.com]

Hi, it seems have problem with physical issue layer 1, first check wiring connection, by the way you can check with card led (If ISDN plugs into the port, the LED will not blink, but in red color.) after dahdi alarm status, and dahdi restart command.
At last should be signalling mode to signalling = bri_cpe_ptmp
Good luck

Mc GRATH Ricardo
E-Mail mcgrathr@mail2web.com
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[dduffett at digium.com]

Does the BT Versatility system you are trying to connect require a voltage on the line, which it would normally get from the BT connection?

Some BRI equipment does, and some does not, and it may be the Panasonic system you refer to is happy without the voltage, while, perhaps, the BT Versatility needs it.


If you find out that it does need the voltage, I do not think the OpenVox card you mentioned will supply it, but I can point you to a solution if required.


All the best,




On Sunday, August 3, 2014, Mc GRATH Ricardo <mcgrathr@mail2web.com (mcgrathr@mail2web.com)> wrote:

[kernel at tekno-soft.it]

Il 01/08/2014 21.13, Richard Mudgett ha scritto:

[kernel at tekno-soft.it]

Il 03/08/2014 16.16, Mc GRATH Ricardo ha scritto:

[kernel at tekno-soft.it]

Il 03/08/2014 16.37, David Duffett ha scritto:

[kernel at tekno-soft.it]

On 08/03/2014 04:37 PM, David Duffett wrote:

[dduffett at digium.com]

If the OpenVox card can supply the voltage, then it will a configuration option (probably in hardware, like some jumpers) of the card itself.
I was going to point you to the Xorcom Astribank, which I know supplies the required voltage.
All the best,
David On 4 Aug 2014 13:16, "Roberto Fichera" <kernel@tekno-soft.it (kernel@tekno-soft.it)> wrote:

[kernel at tekno-soft.it]

On 08/04/2014 01:21 PM, David Duffett wrote:

[dduffett at digium.com]

Please come back to let us know if this actually does fix the issue. On 4 Aug 2014 14:36, "Roberto Fichera" <kernel@tekno-soft.it (kernel@tekno-soft.it)> wrote:

[kernel at tekno-soft.it]

On 08/04/2014 03:03 PM, David Duffett wrote: