Asterisk and x100p - Error: wcfxo: Out of space to write register 05 with 0a

Question

I am running a IP PBX system with trixbox, what i'm trying to do is connect PSTN lines with IAX2 using X100P analogue card.

The problem is i cannot call any outgoing routes. (already tried AsteriskNOW and elastix)

The problem as i've learned is "low IRQ"(Interrupt Request), if that is the case how do i increase it? or am i missing something.

I read all the documentations and still the problem exists, if anyone has any idea about IRQ then please help me.

The error while i try to call out is what mentioned in the title.

Any help would be appreciated.

Answer 1

Like i said it's the IRQ, Interrupt Request. the X100P devices makes lot of requests so it needs to be on higher IRQ. Try changing PCI slots or motherboard. Once you have enough IRQ to make and receive calls "Don't remove it". That's it.

Answer 2

My response is (informed) speculation based on years running an ISP in the days of modems, and also having used [ and sold ] X100P cards - however I have not run across your problem - I answer because I suspect most people havn't come across this - particularly as with the rise of VOIP, X100P cards are - at least in my part of the world - largely a thing of the past.

An X100P card is actually just a specific Windows / Soft Modem, ie a modem with cut down firmware - which Digium wrote a driver for and can be controlled sufficiently by Asterisk.

The problem is probably that you don't have any free IRQ's to be assigned to the modem. The first thing I would try is loading your BIOS and disabling devices which you don't use - for example Floppy disk drive, but more importantly, any serial or parellel ports if you have them.

If that fails, you should try adding the command "pci=routeirq", or, if that fails, "pollirq" to the boot line of your kernel. (If you don't know how to do it, thats a seperate question - we would need to know the distro and version you are running - and, if you know it, which boot loader). Here is an old, but possibly useful post related to this paragraph.