Ayuda...a2billing 1.70 - Trixbox

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Hola amigos, quien me puede ayudar con este problema. Configuro mi anexo desde a2billing, todo bien marco ej.00511xxxxxx, la llamada es detectada en trixbox, pero no sale, no hay audio nada de nada.....el tiempo comienza a correr, pero no sale.
Trixbox muestra la llamada en curso , codec g729,queda registrado en el cdr como llamada no respondida pero no sale, tampoco ringea....

Ahora si hago una extension directo en trixbox , puedo llamar sin problema por el mismo trunk...

Debe ser algo simple, pero no lo veo

[May 30 20:16:05] VERBOSE[19585] logger.c: == Using SIP RTP TOS bits 184
[May 30 20:16:05] VERBOSE[19585] logger.c: == Using SIP RTP CoS mark 5
[May 30 20:16:05] VERBOSE[19585] logger.c: == Using SIP VRTP TOS bits 136
[May 30 20:16:05] VERBOSE[19585] logger.c: == Using SIP VRTP CoS mark 6
[May 30 20:16:05] VERBOSE[13742] logger.c: -- Executing [005117073501@a2billing:1] Answer("SIP/5320713295-00000081", "") in new stack
[May 30 20:16:06] VERBOSE[13742] logger.c: -- Executing [005117073501@a2billing:2] Wait("SIP/5320713295-00000081", "1") in new stack
[May 30 20:16:07] VERBOSE[13742] logger.c: -- Executing [005117073501@a2billing:3] AGI("SIP/5320713295-00000081", :? "a2billing.php,1")in new stack
[May 30 20:16:07] VERBOSE[13742] logger.c: -- Launched AGI Script /var/lib/asterisk/agi-bin/a2billing.php
[May 30 20:16:07] VERBOSE[13742] logger.c: -- AGI Script Executing Application: (DIAL) Options: (sip/netvoice/005117073501|60|HrCRL(4285000:61000:30000))
[May 30 20:16:07] WARNING[13742] pbx.c: The application delimiter is now the comma, not the pipe. Did you forget to convert your dialplan? (Dial(sip/netvoice/005117073501|60|HrCRL(4285000:61000:30000)))
[May 30 20:16:07] VERBOSE[13742] logger.c: == Using SIP RTP TOS bits 184
[May 30 20:16:07] VERBOSE[13742] logger.c: == Using SIP RTP CoS mark 5
[May 30 20:16:07] VERBOSE[13742] logger.c: == Using SIP VRTP TOS bits 136
[May 30 20:16:07] VERBOSE[13742] logger.c: == Using SIP VRTP CoS mark 6
[May 30 20:16:07] VERBOSE[13742] logger.c: -- Called netvoice/005117073501|60|HrCRL(4285000:61000:30000)
[May 30 20:16:17] NOTICE[13742] res_agi.c: FONALITY: Hangup detected, AGI terminates.
[May 30 20:16:17] VERBOSE[13742] logger.c: == Spawn extension (a2billing, 005117073501, 3) exited non-zero on 'SIP/5320713295-00000081'
[May 30 20:16:34] VERBOSE[13753] logger.c: == Manager 'admin' logged on from 127.0.0.1