Hi, everithing is good. But every 30 seconds circuits are in reset. This is from ss7 debug: [Dec 4 16:11:02] WARNING[7511]: chan_dahdi.c:10094 ss7_linkset: MTP2 link down (SLC -1214249800) Changeover completed on link SLC: 0 PC: 1606 FSN: 6 [Dec 4 16:11:02] ERROR[7511]: chan_dahdi.c:10935 dahdi_ss7_error: Adjecent SP PC: 1606 DOWN!!! [Dec 4 16:11:02] WARNING[7511]: chan_dahdi.c:10094 ss7_linkset: MTP2 link down (SLC 166448424) --- SS7 Down --- [Dec 4 16:11:03] ERROR[7511]: chan_dahdi.c:10935 dahdi_ss7_error: T7 expired on link SLC: 1 ADJPC: 1606 MTP2 link up (SLC 166448424) Adjecent SP PC: 1606 UP!!! LINKSET UP DELAYING RESETTING --- SS7 Up --- Resetting CICs 2 to 31 Resetting CICs 3202 to 3231 Got reset acknowledgement from CIC 2 to 31 DPC: 1600 Got reset acknowledgement from CIC 3202 to 3231 DPC: 1600 MTP2 link up (SLC -1214249800) Changeback started on link SLC 0 PC 1606 Changeback completed on link SLC: 0 PC: 1606 Thanks in advanced. Regards, Peter