[asterisk-ss7] Sporadic SS7 Link Down

[Val Appleyard]

Hi people!
I have DAHDI Version: 2.4.0 with Asterisk 1.6.2.13 and libss7 1.0.2.
Sometimes the link was down and up (that is sporadic). The system doesn't
have many calls even.

Any suggestion?
Is a problem of PSTN or is a problem with my digium?

Thanks!

Here is a debug result with the error....




Len = 25 [ 8e 8d 16 81 83 09 02 00 21 f0 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 ]
FSN: 13 FIB 1
BSN: 14 BIB 1
>[0] MSU
[ 8e 8d 16 ]
        Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
        [ 81 ]
        OPC 8 DPC 2435 SLS 0
        [ 83 09 02 00 ]
        H0: 1 H1: 2
        [ 21 ]

Len = 25 [ 8d 8f 16 b1 08 c0 60 02 11 f0 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 ]
FSN: 15 FIB 1
BSN: 13 BIB 1
<[0] MSU
[ 8d 8f 16 ]
        Network Indicator: 2 Priority: 3 User Part: STD_TEST (1)
        [ b1 ]
        OPC 2435 DPC 8 SLS 0
        [ 08 c0 60 02 ]
        H0: 1 H1: 1
        [ 11 ]

Len = 25 [ 8f 8e 16 81 83 09 02 00 21 f0 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 ]
FSN: 14 FIB 1
BSN: 15 BIB 1
>[0] MSU
[ 8f 8e 16 ]
        Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
        [ 81 ]
        OPC 8 DPC 2435 SLS 0
        [ 83 09 02 00 ]
        H0: 1 H1: 2
        [ 21 ]

Len = 4 [ 8e 90 01 03 ]
FSN: 16 FIB 1
BSN: 14 BIB 1
<[0] LSSU SIOS

*Link state change: INSERVICE -> IDLE*
*Link state change: IDLE -> NOTALIGNED*
*[Jul 15 18:24:45] WARNING[19341]: chan_dahdi.c:11634 ss7_linkset: MTP2 link
down (SLC 0)*
Len = 4 [ ff ff 01 00 ]
FSN: 127 FIB 1
BSN: 127 BIB 1
>[0] LSSU SIO

Len = 4 [ ff ff 01 00 ]
FSN: 127 FIB 1
BSN: 127 BIB 1
<[0] LSSU SIO

*Link state change: NOTALIGNED -> ALIGNED*
Len = 4 [ ff ff 01 02 ]
FSN: 127 FIB 1
BSN: 127 BIB 1
>[0] LSSU SIE

Len = 4 [ ff ff 01 01 ]
FSN: 127 FIB 1
BSN: 127 BIB 1
<[0] LSSU SIN

*Link state change: ALIGNED -> PROVING*
*T4 expired!*
*Link state change: PROVING -> ALIGNEDREADY*
Len = 3 [ ff ff 00 ]
FSN: 127 FIB 1
BSN: 127 BIB 1
>[0] FISU

Len = 3 [ ff ff 00 ]
FSN: 127 FIB 1
BSN: 127 BIB 1
<[0] FISU

*Link state change: ALIGNEDREADY -> INSERVICE*
MTP2 link up (SLC 0)
Len = 20 [ ff 80 11 81 83 09 02 00 11 a0 32 35 36 34 32 38 36 32 38 38 ]
FSN: 0 FIB 1
BSN: 127 BIB 1
>[0] MSU
[ ff 80 11 ]
        Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
        [ 81 ]
        OPC 8 DPC 2435 SLS 0
        [ 83 09 02 00 ]
        H0: 1 H1: 1
        [ 11 ]

Len = 25 [ 80 80 16 b1 08 c0 60 02 11 f0 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 ]
FSN: 0 FIB 1
BSN: 0 BIB 1
<[0] MSU
[ 80 80 16 ]
        Network Indicator: 2 Priority: 3 User Part: STD_TEST (1)
        [ b1 ]
        OPC 2435 DPC 8 SLS 0
        [ 08 c0 60 02 ]
        H0: 1 H1: 1
        [ 11 ]

Len = 25 [ 80 81 16 81 83 09 02 00 21 f0 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 ]
FSN: 1 FIB 1
BSN: 0 BIB 1
>[0] MSU
[ 80 81 16 ]
        Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
        [ 81 ]
        OPC 8 DPC 2435 SLS 0
        [ 83 09 02 00 ]
        H0: 1 H1: 2
        [ 21 ]

Len = 20 [ 80 81 11 b1 08 c0 60 02 21 a0 32 35 36 34 32 38 36 32 38 38 ]
FSN: 1 FIB 1
BSN: 0 BIB 1
<[0] MSU
[ 80 81 11 ]
        Network Indicator: 2 Priority: 3 User Part: STD_TEST (1)
        [ b1 ]
        OPC 2435 DPC 8 SLS 0
        [ 08 c0 60 02 ]
        H0: 1 H1: 2
        [ 21 ]
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