hi Scene：centos5.8 ， te110p pri ， dahdi-linux-2.2.1，libpri-1.4.12. Installed no error. when load mod_freetdm ,Error messages as follows 2012-11-20 15:43:21.969763 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:21.969763 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:21.969763 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:21.989754 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:21.989754 [ERR] ftmod_zt.c:1119 [s1c16][1:16] Bad frame checksum (ZT_EVENT_BADFCS) 2012-11-20 15:43:21.989754 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:22.009782 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:22.009782 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:22.029753 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) 2012-11-20 15:43:22.029753 [ERR] ftmod_zt.c:1131 [s1c16][1:16] HDLC abort frame received (ZT_EVENT_ABORT) How to solve it? Thanks TangDu -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/errors-with-configure-ftmod-li... Sent from the freeswitch-users mailing list archive at Nabble.com.