<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:10pt">Hi,
<div class="yiv2036712265MsoNormal"> </div>
<div class="yiv2036712265MsoNormal">My telco are checking their side but, is strange because
some times I can see in the logs that the link gets up, but after a short time,
I receive another SIOS and the link gets down again: </div>
<div class="yiv2036712265MsoNormal"> </div>
<div class="yiv2036712265MsoNormal"> </div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Link state
change: IDLE -> NOTALIGNED</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 4 [ ff ff
01 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 127 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 127 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] >[0] LSSU SIO</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 4 [ ff ff
01 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 127 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 127 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] LSSU SIO</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Link state
change: NOTALIGNED -> ALIGNED</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 4 [ ff ff
01 02 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 127 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 127 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] >[0] LSSU SIE</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 4 [ ff ff
01 02 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 127 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 127 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] LSSU SIE</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Link state
change: ALIGNED -> PROVING</div>
<div class="yiv2036712265MsoNormal">*** [1] T4 expired! ***</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Link state
change: PROVING -> ALIGNEDREADY</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 3 [ ff ff
00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 127 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 127 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] >[0] FISU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 3 [ ff ff
00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 127 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 127 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] FISU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Link state
change: ALIGNEDREADY -> INSERVICE</div>
<div class="yiv2036712265MsoNormal">sig_ss7.c: Linkset 1: Processing event: Unknown Event</div>
<div class="yiv2036712265MsoNormal">sig_ss7.c: MTP2 link up (SLC 0)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 20 [ ff 80
11 81 a6 42 c3 00 11 a0 32 35 36 34 32 38 36 32 38 38 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 0 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 127 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] >[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ ff 80 11 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: STD_TEST (1)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 81 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 781 DPC 678 SLS 0</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ a6 42 c3 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>H0: 1 H1: 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 11 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 20 [ 80 80
11 81 0d 83 a9 00 11 a0 aa aa aa aa aa aa aa aa aa aa ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 0 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 0 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ 80 80 11 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: STD_TEST (1)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 81 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 678 DPC 781 SLS 0</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 0d 83 a9 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>H0: 1 H1: 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 11 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal">sig_ss7.c: Linkset 1: Processing event: SS7_EVENT_UP</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 20 [ 80 81
11 81 a6 42 c3 00 21 a0 aa aa aa aa aa aa aa aa aa aa ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 1 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 0 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] >[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ 80 81 11 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: STD_TEST (1)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 81 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 781 DPC 678 SLS 0</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ a6 42 c3 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>H0: 1 H1: 2</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 21 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 20 [ 80 81
11 81 0d 83 a9 00 21 a0 32 35 36 34 32 38 36 32 38 38 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 1 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 0 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ 80 81 11 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: STD_TEST (1)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 81 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 678 DPC 781 SLS 0</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 0d 83 a9 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>H0: 1 H1: 2</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 21 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 14 [ 81 82
0b 85 0d 83 a9 10 01 00 17 01 01 0e ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 2 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 1 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ 81 82 0b ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: ISUP (5)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 85 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 678 DPC 781 SLS 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 0d 83 a9 10 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>CIC: 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 01 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Message Type: GRS</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 17 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>--VARIABLE LENGTH PARMS[1]--</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range and status:</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range: 14</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 01 0e ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal">sig_ss7.c: Linkset 1: Processing event: ISUP_EVENT_GRS</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 16 [ 82 82
0d 85 a6 42 c3 00 01 00 29 01 03 0e 00 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 2 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 2 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] >[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ 82 82 0d ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: ISUP (5)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 85 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 781 DPC 678 SLS 0</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ a6 42 c3 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>CIC: 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 01 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Message Type: GRA</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 29 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>--VARIABLE LENGTH PARMS[1]--</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range and status:</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range: 14</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 03 0e 00 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 14 [ 81 83
0b 85 0d 83 a9 d0 2d 01 17 01 01 0e ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 3 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 1 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ 81 83 0b ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: ISUP (5)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 85 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 678 DPC 781 SLS 13</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 0d 83 a9 d0 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>CIC: 301</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 2d 01 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Message Type: GRS</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 17 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>--VARIABLE LENGTH PARMS[1]--</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range and status:</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range: 14</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 01 0e ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal">sig_ss7.c: Linkset 1: Processing event: ISUP_EVENT_GRS</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 16 [ 83 83
0d 85 a6 42 c3 00 2d 01 29 01 03 0e 00 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 3 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 3 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] >[0] MSU</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] [ 83 83 0d ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Network Indicator: 2 Priority: 0 User
Part: ISUP (5)</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 85 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>OPC 781 DPC 678 SLS 0</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ a6 42 c3 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>CIC: 301</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 2d 01 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Message Type: GRA</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>[ 29 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>--VARIABLE LENGTH PARMS[1]--</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range and status:</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]<span style=""> </span>Range: 14</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <span style=""> </span>[ 03 0e 00 00 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Len = 4 [ 83 83
01 03 ]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] FSN: 3 FIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] BSN: 3 BIB 1</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] <[0] LSSU SIOS</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1]</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Link state
change: INSERVICE -> IDLE</div>
<div class="yiv2036712265MsoNormal"><span style=""> </span>[1] Link state
change: IDLE -> NOTALIGNED</div>
<div class="yiv2036712265MsoNormal">sig_ss7.c: Linkset 1: Processing event: Unknown Event</div>
<div class="yiv2036712265MsoNormal">sig_ss7.c: MTP2 link down (SLC 0)</div>
<br><br>do you have any other sugestions to check?<br><br><br>thanks a lot!<br><br><br>--<br>Marcus<br><div><br></div> <div style="font-family: Courier New, courier, monaco, monospace, sans-serif; font-size: 10pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"><b><span style="font-weight:bold;"></span></b></font>> Here the other end is closing the connection - noting wrong on your side.<br></div>> Is the link enabled (and properly configured) at telco side?<br><br> </div> </div> </div></body></html>