Hello All, PRI to SIP calls are being destroyed after a few minutes, and I get the stream below in a full debugging log. SIP to SIP works okay. I'm using Asterisk CVS head 10-31-2005 with a TE110XP card set to T1. Actually two TE100XPs are installed, but I only have one T1 plugged in currently. System runs Fedora Core 4 (2.6.13-1.1532_FC4). I had my telco rebuild my T1 on a new card, and no difference. Thanks, Murrah Boswell Anybody know what might be going on with this: ... Oct 30 19:40:26 DEBUG[4003] chan_sip.c: Stopping retransmission on '0ce27f3f33b8a3413bd06014252aed68@209.145.236.3' of Request 102:$ Oct 30 19:40:31 DEBUG[4003] chan_sip.c: Auto destroying call '003094c2-89a10002-12996462-344915f9@209.145.193.84' Oct 30 20:16:20 NOTICE[4004] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1 Oct 30 20:16:20 WARNING[4005] chan_zap.c: Detected alarm on channel 1: Red Alarm Oct 30 20:16:20 NOTICE[4004] chan_zap.c: PRI got event: Alarm (4) on Primary D-channel of span 1 Oct 30 20:16:20 WARNING[4004] chan_zap.c: No D-channels available! Using Primary channel 24 as D-channel anyway! Oct 30 20:16:20 WARNING[4005] chan_zap.c: Unable to disable echo cancellation on channel 1 Oct 30 20:16:20 WARNING[4005] chan_zap.c: Detected alarm on channel 2: Red Alarm Oct 30 20:16:20 WARNING[4005] chan_zap.c: Unable to disable echo cancellation on channel 2 Oct 30 20:16:20 WARNING[4005] chan_zap.c: Detected alarm on channel 3: Red Alarm ... Oct 30 20:16:20 WARNING[4005] chan_zap.c: Detected alarm on channel 23: Red Alarm Oct 30 20:16:20 WARNING[4005] chan_zap.c: Unable to disable echo cancellation on channel 23 Oct 30 20:16:25 VERBOSE[4004] logger.c: == Primary D-Channel on span 1 down Oct 30 20:16:25 WARNING[4004] chan_zap.c: No D-channels available! Using Primary channel 24 as D-channel anyway! Oct 30 20:16:33 NOTICE[4004] chan_zap.c: PRI got event: No more alarm (5) on Primary D-channel of span 1 Oct 30 20:16:34 NOTICE[4005] chan_zap.c: Alarm cleared on channel 1 Oct 30 20:16:34 NOTICE[4005] chan_zap.c: Alarm cleared on channel 2 ... Oct 30 20:16:34 NOTICE[4005] chan_zap.c: Alarm cleared on channel 23 Oct 30 20:16:36 VERBOSE[4004] logger.c: == Primary D-Channel on span 1 up Oct 30 20:16:36 VERBOSE[4004] logger.c: == Restart on requested on entire span 1 Oct 30 20:16:39 VERBOSE[4004] logger.c: == Primary D-Channel on span 1 down Oct 30 20:16:39 WARNING[4004] chan_zap.c: No D-channels available! Using Primary channel 24 as D-channel anyway! Oct 30 20:16:39 VERBOSE[4004] logger.c: !! Got S-frame while link down Oct 30 20:16:40 VERBOSE[4004] logger.c: == Primary D-Channel on span 1 up Oct 30 20:16:40 VERBOSE[4004] logger.c: == Restart on requested on entire span 1 Oct 30 20:16:43 VERBOSE[4004] logger.c: == Primary D-Channel on span 1 down