Problem With Inbound route to IVR

Hello i have a strange problem, i’ve created an IVR with a welcome and dial extension message for incoming calls, after that I’ve created an inbound route to that ivr, the problem is that when an incoming call arrives the asterisk CLI shows that the call is being answered by the IVR but I can’t hear nothing in the PSTN side, some times i hear the message and dial an extension and works fine, but must of the times looks like call did not connect even the asterisk CLI shows that it’s working. When I change the inbound route to a specific extansion the calls go to that extension without problems but to the IVR nothing happens.
This is what asterisk CLI shows:
– Starting simple switch on ‘Zap/1-1’
– Executing [s@from-pstn:1] Set(“Zap/1-1”, “__FROM_DID=s”) in new stack
– Executing [s@from-pstn:2] GotoIf(“Zap/1-1”, “0 ?cidok”) in new stack
– Executing [s@from-pstn:3] Set(“Zap/1-1”, “CALLERID(name)=”) in new stack
– Executing [s@from-pstn:4] NoOp(“Zap/1-1”, “CallerID is “” <>”) in new stack
– Executing [s@from-pstn:5] Ringing(“Zap/1-1”, “”) in new stack
– Executing [s@from-pstn:6] Set(“Zap/1-1”, “FAX_RX=disabled”) in new stack
– Executing [s@from-pstn:7] Goto(“Zap/1-1”, “ivr-3|s|1”) in new stack
– Goto (ivr-3,s,1)
– Executing [s@ivr-3:1] Set(“Zap/1-1”, “LOOPCOUNT=0”) in new stack
– Executing [s@ivr-3:2] Set(“Zap/1-1”, “__DIR-CONTEXT=”) in new stack
– Executing [s@ivr-3:3] Set(“Zap/1-1”, “_IVR_CONTEXT_ivr-3=”) in new stack
– Executing [s@ivr-3:4] Set(“Zap/1-1”, “_IVR_CONTEXT=ivr-3”) in new stack
– Executing [s@ivr-3:5] GotoIf(“Zap/1-1”, “0?begin”) in new stack
– Executing [s@ivr-3:6] Answer(“Zap/1-1”, “”) in new stack
– Executing [s@ivr-3:7] Wait(“Zap/1-1”, “1”) in new stack
– Executing [s@ivr-3:8] Set(“Zap/1-1”, “TIMEOUT(digit)=3”) in new stack
– Digit timeout set to 3
– Executing [s@ivr-3:9] Set(“Zap/1-1”, “TIMEOUT(response)=10”) in new stack
– Response timeout set to 10
– Executing [s@ivr-3:10] BackGround(“Zap/1-1”, “custom/Welcomebnv”) in new stack
– <Zap/1-1> Playing ‘custom/Welcomebnv’ (language ‘en’)
== Parsing ‘/etc/asterisk/manager.conf’: Found
== Parsing ‘/etc/asterisk/manager_custom.conf’: Found

Looks like is answering the call but in the PSTN side nothing is listen and nothing happens if i dial any extension.
I have trixbox 2.4 conected to a T1 line with a TE207P Digium Card.

Sorry for my bad english.
Regards.
Carlos Ortiz.