Marcar a dahdi problema

[pirruman]

Saludos al querer sacar llamada por mi sangoma he intentado lo siguiente

dial 4528111223344@vicidial-auto
[Jul 16 18:56:37] WARNING[26282]: chan_oss.c:687 setformat: Unable to re-open DSP device /dev/dsp: No such file or directory
[Jul 16 18:56:37] -- Executing [4528111223344@vicidial-auto:1] AGI("Console/dsp", "agi://127.0.0.1:4577/call_log") in new stack
[Jul 16 18:56:37] -- AGI Script agi://127.0.0.1:4577/call_log completed, returning 0
[Jul 16 18:56:37] -- Executing [4528111223344@vicidial-auto:2] Dial("Console/dsp", "DAHDI/1/8111223344||tToR") in new stack
[Jul 16 18:56:37] -- Called 1/8111223344[Jul 16 18:56:40] -- DAHDI/1-1 answered Console/dsp
[Jul 16 18:56:40] << Console call has been answered >>

y me arroja los siguientes mensajes:

[Jul 16 18:56:40] WARNING[26305]: chan_oss.c:687 setformat: Unable to re-open DSP device /dev/dsp: No such file or directory
[Jul 16 18:56:41] WARNING[26305]: chan_oss.c:687 setformat: Unable to re-open DSP device /dev/dsp: No such file or directory

mi plan de marcacion es este

exten => _45281XXXXXXXX,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _45281XXXXXXXX,2,Dial(DAHDI/1/${EXTEN:-10},,tToR)
exten => _45281XXXXXXXX,3,Dial(DAHDI/2/${EXTEN:-10},,tToR)
exten => _45281XXXXXXXX,4,Hangup

alguien me podria dar un indicio por donde buscar la solucion o interpretar los mensajes, de antemano gracias