[asterisk-users] [UK SPECIFIC] DAHDI and a OpenVox Card

[Dunc]

Tiago Durante wrote:
> Dunc
> 
> On Sat, May 23, 2009 at 12:43 PM, Dunc <dunc at lemonia.org> wrote:
>> Tzafrir Cohen wrote:
>>> On Sat, May 23, 2009 at 04:02:57PM +0100, Dunc wrote:
>>>
>>>> In the UK we do. (Well on BT lines - I've a funny feeling some
>>>> Telewest/NTL lines use Bell signaling).
>>>>
>>>> On an incoming call we get:
>>>>
>>>>     Polarity reversal.
>>>>     FSK Caller ID burst
>>>>     Ringing
>>> https://issues.asterisk.org/view.php?id=9096 ?
>>>
>> Thanks for the link, at the moment my stuff doesn't work properly at all
>> though, it's not just the caller ID stuff.
>>
>> I'm guessing it's down to the cable though now after reading the
>> previous posts on this thread. If someone knows exactly which pins at
>> each end I need to connect with a 2 wire cable that would be amazing (UK
>> NTL phone line.) (Bueller, anyone? :-) )
>>
>>
>> Once I have incoming calls working then I think I'll be back fixing the
>> caller ID stuff :)
> 
> I've some experience with openvox cards, what card are you using?
> 
> What problems are you having?
> 
> 
> Cheers,
> 

Hi Tiago,

I have an OpenVox A400P11, it shows up like this...

eddie ~ # lsdahdi
### Span  1: WCTDM/4 "Wildcard TDM400P REV E/F Board 5" (MASTER)
   1 FXS        FXSKS       (EC: MG2)  RED
   2 FXO        FXOLS       (EC: MG2)
Use of uninitialized value in string eq at 
/usr/lib64/perl5/site_perl/5.8.8/Dahdi/Chans.pm line 221.
   3 unknown
Use of uninitialized value in string eq at 
/usr/lib64/perl5/site_perl/5.8.8/Dahdi/Chans.pm line 221.
   4 unknown
eddie ~ #


I'm pretty sure that the RED alarm is a bad thing. While googling about 
this error from the asterisk console....

*CLI> [May 23 18:14:02] NOTICE[4469]: chan_dahdi.c:8164 
handle_init_event: Alarm cleared on channel 1
[May 23 18:14:03] WARNING[4469]: chan_dahdi.c:4664 handle_alarms: 
Detected alarm on channel 1: Red Alarm


I discovered this thread on the mailing list, and so signed up and 
mailed in with the same subject. It didn't link them together though it 
seems, so here's a URL

http://www.mail-archive.com/asterisk-users@lists.digium.com/msg223429.html


If you read this specific post, and the last few before....

http://www.mail-archive.com/asterisk-users@lists.digium.com/msg223523.html


it seems that a 2-pin cable from the wall socket to the card is 
required. Now, I was warned about cables and did my best to get the one 
that sounded right, however mine definitely has 4 pins.


So my 2 questions are

1) What are the pinouts for the 2 pin cable, and I'll make my own for 
now (For bonus points, unless the wires are crossed over, what possible 
difference could it make when the TDM card only has 2 pins anyway?)

2) Is this the correct cable for NTL too?


I think I should find out definite answers to the above before I worry 
any further about the card and Asterisk :-)

Thanks for getting back to me, hope you can help.

Cheers,

Dunc