Hi Kaloya, Thank you for your reply. I changed my config with your instructions: signalling=ss7 ss7type=itu ss7_called_nai=dynamic ss7_calling_nai=dynamic networkindicator=national linkset=2 pointcode=1 defaultdpc=12 adjpointcode=12 group=1 cicbeginswith=1 context=from-pstn-01 channel=>1-31 group=2 context=from-pstn-02 cicbeginswith=32 channel=>32-46 cicbeginswith=48 channel=>48-62 group=3 context=from-pstn-03 cicbeginswith=63 channel=>63-77 cicbeginswith=79 channel=>79-93 sigchan=47 sigchan=78 But the problem still occcurs, when I disconnect the cable of sigchan 47. [2] Len = 4 [ ff ff 01 00 ] [2] FSN: 127 FIB 1 [2] BSN: 127 BIB 1 [2] <[1] LSSU SIO [2] [2] Link state change: INSERVICE -> IDLE [2] Link state change: IDLE -> NOTALIGNED [Mar? 6 09:42:09] WARNING[12272]: sig_ss7.c:675 ss7_linkset: MTP2 link down (SLC 1) [2] Len = 4 [ ff ff 01 02 ] [2] FSN: 127 FIB 1 [2] BSN: 127 BIB 1 [2] <[1] LSSU SIE [2] [2] Link state change: NOTALIGNED -> PROVING [2] T4 expired! [2] Link state change: PROVING -> ALIGNEDREADY [2] Len = 3 [ ff ff 00 ] [2] FSN: 127 FIB 1 [2] BSN: 127 BIB 1 [2] >[1] FISU [2] [2] Len = 3 [ ff ff 00 ] [2] FSN: 127 FIB 1 [2] BSN: 127 BIB 1 [2] <[1] FISU [2] [2] Link state change: ALIGNEDREADY -> INSERVICE MTP2 link up (SLC 1) [2] Len = 20 [ ff 80 11 81 01 00 03 10 11 a0 32 35 36 34 32 38 36 32 38 38 ] [2] FSN: 0 FIB 1 [2] BSN: 127 BIB 1 [2] >[0] MSU [2] [ ff 80 11 ] [2]???? Network Indicator: 2 Priority: 0 User Part: STD_TEST (1) [2]???? [ 81 ] [2]???? OPC 12 DPC 1 SLS 1 [2]???? [ 01 00 03 10 ] [2]???? H0: 1 H1: 1 [2]???? [ 11 ] [2] [2] Len = 4 [ ff ff 01 00 ] [2] FSN: 127 FIB 1 [2] BSN: 127 BIB 1 [2] >[0] LSSU SIO [2] [2] Link state change: NOTALIGNED -> IDLE [2] Link state change: IDLE -> NOTALIGNED [2] Link state change: NOTALIGNED -> IDLE [2] Link state change: IDLE -> NOTALIGNED [2] Link state change: NOTALIGNED -> IDLE [2] Link state change: IDLE -> NOTALIGNED [2] Link state change: NOTALIGNED -> IDLE [2] Link state change: IDLE -> NOTALIGNED [2] Link state change: NOTALIGNED -> IDLE [2] Link state change: IDLE -> NOTALIGNED I can't sincronize with channel 78. My backup sigchan. If I take off the channel 47 manually, the linkset gets up: ;sigchan=47 sigchan=78 Can you tell me if I having any concept mistake or if my configuration is wrong? thanks a lot. -- Marcus ________________________________ De: Kaloyan Kovachev <kkovachev at varna.net> Para: Marcus Vinicius <marc_mcs10 at yahoo.com.br>; asterisk-ss7 at lists.digium.com Enviadas: Ter?a-feira, 6 de Mar?o de 2012 5:04 Assunto: Re: [asterisk-ss7] Redundant sigchan, libss7 Hi, move your sigchan definitions at the end - see below > define both sigchans here and make sure you use the correct SLC -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-ss7/attachments/20120306/25e79a59/attachment.htm>