[asterisk-users] Question on system command 1.4.43

Jim DeVito asterisk-users-mailing-list at devito.cc
Tue Jan 3 08:29:01 CST 2012


Does the user Asterisk is running as have access to this device?

Thanks!!



----- Original message -----
> 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)
> 
> 
> 
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