[asterisk-users] Question on system command 1.4.43

[Jerry Geis]

On 01/03/2012 08:48 AM, Jerry Geis wrote:
> I have a USB to serial converter attached to my box.  pl2303: Prolific 
> PL2303 USB to serial adaptor driver
> if I login to the box and send/receive serial commands over this unit 
> it works without error EVERY time.
>
> however, if I run the same command set from with-in the 
> extensions.conf with System()
> I get errors in dmesg like "pl2303 ttyUSB0: pl2303_open - failed 
> submitting read urb, error -22"
> and then obviusly my command does not work.
>
> however, again - If I go back to the command line and my command it 
> runs just fine.
>
> Any ideas on what might be happening here?
>
> Jerry
>
> extensions.conf
> exten => s,1,ChanIsAvail(Console/Dsp)
> exten => s,n,GotoIf($["${AVAILCHAN}" = ""]?smvoice-busy,s,1)
> exten => s,n,System(/home/silentm/bin/usbserial -start)
> exten => s,n,Playback(beep)
> exten => s,n,Dial(Console/dsp)
> exten => s,n,Hangup
> exten => h,1,System(/home/silentm/bin/usbserial -stop)
>
>
Jim and Doug

Yes the process is running as root. I should have mentioned that.
Also - yes the usbserial is a paging notification program.

So if its not permissions (since its running as root) what else might it be?

Thanks,

Jerry