Asterisk 1.4.23.1 on Centos 5 When I turn on DEBUG to a high value (in this case 100) I see about a gazillion of these: pbx# fgrep 132034af765ea5467d69600902d14a22 /var/log/asterisk/full [Feb 20 15:21:57] DEBUG[15743] chan_sip.c: = No match Their Call ID: 132034af765ea5467d69600902d14a22 at 192.168.0.11 Their Tag Our tag: as5a51fc5e [Feb 20 15:21:57] DEBUG[15743] chan_sip.c: = Found Their Call ID: 132034af765ea5467d69600902d14a22 at 192.168.0.11 Their Tag Our tag: as5a51fc5e [Feb 20 15:21:57] DEBUG[15743] chan_sip.c: Stopping retransmission on '132034af765ea5467d69600902d14a22 at 192.168.0.11' of Request 102: Match Found [Feb 20 15:21:57] VERBOSE[15743] logger.c: Really destroying SIP dialog '132034af765ea5467d69600902d14a22 at 192.168.0.11' Method: OPTIONS I'm not sure how to trace this back to the offending piece of gear. I'm suspect of three new Audiocodes MP-118s, however, because all three are producing the following (only showing one of them): [Feb 20 07:17:39] DEBUG[7317] chan_sip.c: = No match Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c1903281127 Our tag: as1525e0a3 [Feb 20 07:17:39] DEBUG[7317] chan_sip.c: = No match Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c1903281127 Our tag: as1525e0a3 [Feb 20 07:17:40] DEBUG[7317] chan_sip.c: Auto destroying SIP dialog '1496053832131200013452 at 192.168.0.5' [Feb 20 07:17:40] DEBUG[7317] chan_sip.c: Destroying SIP dialog 1496053832131200013452 at 192.168.0.5 [Feb 20 07:17:40] VERBOSE[7317] logger.c: Really destroying SIP dialog '1496053832131200013452 at 192.168.0.5' Method: REGISTER [Feb 20 07:18:38] DEBUG[7317] chan_sip.c: Allocating new SIP dialog for 1496053832131200013452 at 192.168.0.5 - REGISTER (No RTP) [Feb 20 07:18:38] DEBUG[7317] chan_sip.c: = No match Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c2128534854 Our tag: as40f4d27e [Feb 20 07:18:38] DEBUG[7317] chan_sip.c: = No match Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c2128534854 Our tag: as40f4d27e [Feb 20 07:18:38] DEBUG[7317] chan_sip.c: = Found Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c2128534854 Our tag: as40f4d27e [Feb 20 07:18:38] DEBUG[7317] chan_sip.c: = No match Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c2128534854 Our tag: as40f4d27e [Feb 20 07:18:39] DEBUG[7317] chan_sip.c: = No match Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c2128534854 Our tag: as40f4d27e [Feb 20 07:18:39] DEBUG[7317] chan_sip.c: = No match Their Call ID: 1496053832131200013452 at 192.168.0.5 Their Tag 1c2128534854 Our tag: as40f4d27e This is an Audicodes MP-118 that is spewing out one of the last lines above several times per second. Eventually you see the "destroy" dialog above, then one minute later it all starts again. Always with the same Call ID. Any help? Thanks! j