Buenas tardes... yo tengo el mismo problema... con la salida de llamadas, con solo una linea de telmex, me sale el mismo error... mi antecedente fue que en el área donde esta el servidor hubo bastante tormentas eléctricas lo cual provoco varios apagones.... creo yo que es la tarjeta la que se dañó una A200 con 1 modulo FXO... aunque lo raro de mi caso es que si pueden entrar las llamadas,, pero al momento de realizarlas :
Executing [99276012@DLPN_celular:1] Answer("SIP/776-c0008cc0", "") in new stack
-- Executing [94260872@DLPN_celular:2] Authenticate("SIP/776-c0008cc0", "/etc/asterisk/permisos/local|ja|5") in new stack
-- <SIP/776-c0008cc0> Playing 'agent-pass' (language 'en')
-- <SIP/776-c0008cc0> Playing 'auth-thankyou' (language 'en')
-- Executing [99276012@DLPN_celular:3] Macro("SIP/776-c0008cc0", "trunkdial-failover-0.3|DAHDI/1/9276012||trunk_1|") in new stack
-- Executing [s@macro-trunkdial-failover-0.3:1] GotoIf("SIP/776-c0008cc0", "0?1-fmsetcid|1") in new stack
-- Executing [s@macro-trunkdial-failover-0.3:2] GotoIf("SIP/776-c0008cc0", "0?1-setgbobname|1") in new stack
-- Executing [s@macro-trunkdial-failover-0.3:3] Set("SIP/776-c0008cc0", "CALLERID(num)=776") in new stack
-- Executing [s@macro-trunkdial-failover-0.3:4] GotoIf("SIP/776-c0008cc0", "0?1-dial|1") in new stack
-- Executing [s@macro-trunkdial-failover-0.3:5] Set("SIP/776-c0008cc0", "CALLERID(all)=") in new stack
-- Executing [s@macro-trunkdial-failover-0.3:6] Goto("SIP/776-c0008cc0", "1-dial|1") in new stack
-- Goto (macro-trunkdial-failover-0.3,1-dial,1)
-- Executing [1-dial@macro-trunkdial-failover-0.3:1] Dial("SIP/776-c0008cc0", "DAHDI/1/4260872") in new stack
[Sep 4 12:48:07] WARNING: app_dial.c:1237 dial_exec_full: Unable to create channel of type 'DAHDI' (cause 0 - Unknown)
== Everyone is busy/congested at this time (1:0/0/1)
-- Executing [1-dial@macro-trunkdial-failover-0.3:2] GotoIf("SIP/776-c0008cc0", "0 > 0 ?1-CHANUNAVAIL|1:1-out|1") in new stack
-- Goto (macro-trunkdial-failover-0.3,1-out,1)
-- Executing [1-out@macro-trunkdial-failover-0.3:1] Hangup("SIP/776-c0008cc0", "") in new stack
== Spawn extension (macro-trunkdial-failover-0.3, 1-out, 1) exited non-zero on 'SIP/776-c0008cc0' in macro 'trunkdial-failover-0.3'
== Spawn extension (DLPN_celular, 9276012, 3) exited non-zero on 'SIP/776-c0008cc0'