[cisco-voip] ccm 4.1.3 fct conencted fxo ports issue

[gokhan senol]

Hi 
i got ccm 4.1.3  and  have gateway with vic2-4fxo card for FCT conections (for gsm cals)
it often gives busy signal when i try to call outside. I make 10 calls and  7 of them gives busy signal. i try again and then i can call. What can be the reason of fxo ports connected fct mostly give me busy signals.

below u can see voice-port confis on gateway router/

voice-port 0/1/0
no battery-reversal
timing hookflash-out 500


Note : i used  no  battery reversal  to  call the fct numbers from pstn.
when i call from pstn,call comes to fxo port and then it redirected to number which is specified on the callmanger config  Attendant DN,  
but when i enable batterey reversal  then the calls from pstn to fct can not be redirected to Attendant DN

any idea 
thanks


       
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