E1 Timeslots get stucked with S_R2_COLLECT R2_Q421_IDLE status
I am experiencing a problem with an E1 controller installed on a Cisco 2811 gateway. Since people make calls through the E1, some of the calls do not end correctly and the timeslots used by those calls get stucked with S_R2_COLLECT R2_Q421_IDLE status. From the gateway perspective those timeslots are unused and so free for new calls, but when it try to use them for new calls they are rejected. Does anyone know how could I solve this problem, please? Following are the controller configuration and the "show voice call summary" command output.
Thanks a lot!
controller E1 1/0/0 framing NO-CRC4 line-termination 75-ohm ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled ani cas-custom 0 country brazil metering debounce-time 20 seizure-ack-time 78 double-answer category 2 answer-signal group-b 1
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