We are using FreeSWITCH Version 1.0.head (git-8825b6e 2010-11-28 17-15-39 -0500) WANPIPE Release: 3.5.14 Hardware is Sangoma A101 Partial PRI D-chan=24 B-chans=16-23 We are having trouble with the Partial PRI (channel 16) getting stuck in a state where it cannot take calls. This happens intermittently. The system may run several days or even a week or two without having the problem. It seems that the channel is getting stuck in some odd state when trying to hang up. To resolve this, we unload the FreeTDM mod, restarting Wanrouter, and then reload the FreeTDM mod. This clears the channels and allows the system to take calls normally again. In testing we have also observed the following conditions: 1. Place a call in. Cannot complete. Hang up. 2. Place a call in. It completes and works correctly. 3. Place a call in. Cannot complete. Hang up. 4. Place a call in. It completes and works correctly. The above pattern can be repeated multiple times, with the same result. Here is some log info: 2010-12-26 20:51:20.868083 [DEBUG] ftmod_sangoma_boost.c:1889 RX EVENT (N): CALL_START:(80) [w1g16] CSid=0 Seq=390 Cn=[JONES J ] Cd=[7878030] Ci=[8015542086] Rdnis=[] 2010-12-26 20:51:20.868083 [DEBUG] ftmod_sangoma_boost.c:274 Channel 1:1 ~ 1:16 is already in use in state TERMINATING 2010-12-26 20:51:20.868083 [ERR] ftmod_sangoma_boost.c:1008 s1c16: rejecting incoming call in channel state TERMINATING 2010-12-26 20:51:20.868083 [DEBUG] sangoma_boost_client.c:252 TX EVENT (N): CALL_START_NACK:(82) [s1c16] Rc=44 CSid=0 Seq=5 2010-12-26 20:51:28.563720 [DEBUG] ftmod_sangoma_boost.c:1889 RX EVENT (N): CALL_START_NACK:(82) [s1c16] Rc=16 CSid=0 Seq=391 2010-12-26 20:51:28.563720 [WARNING] ftmod_sangoma_boost.c:811 [s1c1][1:16] Why bother changing state from TERMINATING to TERMINATING Hope this information is useful. Thanks.