D-Channel doesn't come up despite getting Layer1 & Layer2 up

Hi there,

We have installed a D-110P E1 card on an Asterisk server and for some reason, we have tried everything but cannot get it to work properly. The problem is that the D-Channel does not come up. We are attempting to use asterisk as an E1 voip gateway, which connects to a passive (no voip card) “2N Stargate” GSM Gateway (channel bank). The GSM gateway has a PRI port which we have connected to the D110P card using a Crossover E1 cable. (We go not sync at all on Layers 1 & 2 with a straight cable).

Currently, the card is showing a green light, and both Layer 1 & Layer 2 are up but the D-Channel Does not come up.

Our current settings are:

On Stargate GSM Gateway:

PRI 1 Port type: NT,
Sync: Master
Channel number select: upwards
Preffered channel: 0
TEI: 0
CRC: off

On OpenVOX part:

PRI port type: TE
CRC: off (also tried this with both GSM GW and Digium set to on but didn’t work)
Framing: CCS
Coding: HDB8

In diagnostic window we have:

Board type: PRI130 Status: OK
Layer 1: Active Layer 2: OKEST Layer 3: Null
Mode: NT/M

The PRI span status from Asterisk is:

localhost*CLI> pri show span 1
Primary D-channel: 16
Status: Provisioned, Down, Active
Switchtype: EuroISDN
Type: CPE
Window Length: 0/7
Sentrej: 0
SolicitFbit: 0
Retrans: 0
Busy: 0
Overlap Dial: 0
T200 Timer: 1000
T203 Timer: 10000
T305 Timer: 30000
T308 Timer: 4000
T309 Timer: -1
T313 Timer: 4000
N200 Counter: 3

Configuration of asterisk:
/etc/zaptel.conf:
# E1 config
span=1,1,0,ccs,hdb3
bchan=1-15
dchan=16
bchan=17-31

/etc/zapata.conf:
switchtype=euroisdn
signalling=pri_cpe
group=1
channel=>1-15
channel=>17-31

Can anyone help with this??

hello, NewWay：
i think your config files are ok. please double check the physical connection. i think somewhere is wrong with connection. originally, we provide BNC RJ45 connector. the message from asterisk console shows that the line still down.
Regards,
James.zhu

Hi James,

Thanks for the reply. We have checked & double-checked the connection and it appears to be fine. Like I mentioned, booth sides (including the GSM Gateway) are registering the physical E1 connection - which wouldn't be the case if it was a physical connection issue. Could it be due to something else?

I am quite happy to give you ssh access so that you may have a look.

Thanks!

hello, NewWay:
i will login to check it. my msn is: This email address is being protected from spambots. You need JavaScript enabled to view it..
Regards,
James.zhu

Hello James,
Did you manage to have a look at this?
Thanks!

hello, NewWay:
I tried to login your system using username and password, which you emailed me, but i had no lucky. i could get in. please check it!
James.zhu