[Freeswitch-users] NORMAL_CIRCUIT_CONGESTION on gsmopen

(moved from a different thread) on occasion, when trying to make a call, we're getting 'NORMAL_CIRCUIT_CONGESTION' and we're not getting any incoming calls. Currently what we do is unload mod_gsmopen, remove and reinsert the usb stick, then load mod_gsmopen. This also doesn't always help since sometimes we can't unload the gsmopen module (it says 'model in use'). in that case we restart freeswitch and reinsert the usb stick. This might not be caused by the gsmopen, since we're controlling the messages coming from the sim, and we might be doing something wrong. Anyone know what the issue is? Thanks, Shlomi