i have issue to get isdn overlap receiving on a mgcp gateway cisco 3825 12.4(13r)T connected to a CCM 4.1.3sr4d
isdn overlap receiving is set on serial interface and Overlap Receiving Flag for PRI* is set to true on CCM. T302 time is currently set to 8000ms on CCM service parameters.
what happen is that we don't receice the missging digits and the operator claim that it is becuase the gateway close the call and send unallocated phone number. which seems to be true according to the q931 debug trace. the gateway does not send the Q931: TX -> SETUP_ACK but RELEASE_COMP and unallocated phone number.
if the number is send EN BLOCK then all working fine.
attache dthe config of the router and a debug