chan_dahdi.c: read returned error help?

General Help
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1

I have a fresh install of FreePBX with a TDM400. I added “mwimonitor = yes” to the DAHDi config page. Everytime a call comes in, asterisk just spits out errors:

[2015-08-08 19:04:00] WARNING[11120] chan_dahdi.c: read returned error: Resource temporarily unavailable
[2015-08-08 19:04:00] WARNING[11068] chan_dahdi.c: Read failed with -1: Resource temporarily unavailable
[2015-08-08 19:04:00] WARNING[11115] chan_dahdi.c: read returned error: Resource temporarily unavailable
[2015-08-08 19:04:01] WARNING[11116] chan_dahdi.c: read returned error: Resource temporarily unavailable

That continues until asterisk locks up and restarts. Has anyone seen this error before and is maybe able to point me in the correct direction? Thanks!

2

That’s normally a hardware error. Asterisk (the process) asked a Dahdi device for audio, and the Dahdi device wasn’t responding.

Ensure all hardware is firmly seated, and if it still keeps happening, look into replacing it.

3

Ive tried reseating it a few times. If I am going to look at replacing it, is there any cards that you would recommend? I only need 2 FXO ports.

4

Well, if you buy a Sangoma card from https://portal.schmoozecom.com/index.php/store/displayStore#hardware/Sangoma you help support the FreePBX project.

There’s also a wizard there that’ll help you chose the right card. I’m guessing an A200BRM with a FXO board sounds like what you want.