[asterisk-users] Problem: Digium TDM400 with XOptionsFlex - LineBusy

[Martin]

Double check your zaptel.conf and zapata.conf
Default configuration is FXS for line 1-2 and FXO for line 3-4 (as TDM22B is
shipped), in such case only line 3 is configured properly.
Don't get confused, FXO module use FXS signalling and vice versa....

/etc/zaptel.conf

fxsks=1,2,3
fxoks=4


/etc/asterik/zapata.conf

signalling=fxs_ks
context=your_incoming_context
channel=1
channel=2
channel=3

signalling=fxo_ks
context=your_dial_context
channel=4

Martin


----- Original Message ----- 
From: "John Novack" <jnovack at stromberg-carlson.org>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: 22. brezna 2008 12:48
Subject: Re: [asterisk-users] Problem: Digium TDM400 with XOptionsFlex -
Line Busy


> Thomas Klettke wrote:
>> Perhaps someone with more experience can help me solve this puzzle:
>>
>> Asterisk 1.4.18 on a Dell PowerEdge SC440, CentOS 5, 2.6.18-53.1.14.el5,
>> Digium TDM400 with 3FXO(1-3) and 1FXS(4)
>>
>> Phone service is provided by XO Communications via their XOptionsFlex
>> service (5 analog lines, 3 of which are used by Asterisk).
>> For simplicity I refer to them as xx43, xx44, and xx45 - based on their
>> phone numbers. They are connected to the Digium as follows:
>>
>> xx43 = FXO 1
>> xx44 = FXO 2
>> xx45 = FXO 3
>>
>> Here is the problem:
>> When I connect the Asterisk box to the analog lines the first two lines
>> (xx43 and xx44) will instantly switch to "busy". xx45 works fine -
>> incoming and outgoing calls work as expected.
>>
>> I had XO check the lines - all three lines are programmed the same in
>> their equipment. The work OK - until they are connected to the PBX -
>> when xx43 and xx44 instantly switch to "busy".
>>
>> I checked the lines with an analog phone: Each line wokred fine when I
>> plug an analog phone into it.
>>
>> I suspected that my FXO ports 1 and 2 may be bad. Thus I connected FXO 3
>> - which is working with xx45 - to line xx43 and then xx44: They went
>> "busy" right away in either case.
>> I connected FXO 1 and then 2 to line xx45: Worked fine both times.
>>
>> I replaced the entire TDM400 with another card, and repeated the above
>> tests - the results were the same as above.
>>
>> >From those experiments I think I can rule out that the card is
>> defective, as every FXO channel works with line xx45. None of them work
>> with lines xx43 and xx44.
>>
>> I finally replaced the Digium card with a Sangoma A200 with 4 FXO ports
>> (using 1-3 while leaving 4 unused). All 3 lines work as they should.
>>
>> Does anyone have an explanation for this strange behavior?
>> Any suggestions on how to fix it? I would like to get the Digium card to
>> work with this setup as I need the 4th (FXS) port for an analog
>> extension in the office.
>>
> Assuming you have also checked the obvious possible defects regarding
> cords from the XO device to the Digium card, what happens if you reverse
> tip and ring?  When you say "busy" does that mean the line appears to be
> in use when attempting to receive a call? If both a POTS phone and the
> FXO are connected, does the line appear dead, is there noise or static,
> or by busy is it only Asterisk that thinks the port is "busy" The only
> thing that immediately comes to mind is line polarity.
> Not certain even if the Digium FXO circuit is even sensitive to line
> polarity, but I have seen some permanent failures to the module when
> connected to a device that produces an inductive kick when used in pulse
> mode.  These were attempts to interface very old telephony devices that
> were in use before semiconductors were even in a engineer's wet dream.
> Clearly the Sangoma is a better card in many ways, but your needs would
> require you expand the A200 to do what you want.
> That ultimately may be the best solution.
>
> John  Novack