[asterisk-ss7] Debugging SS7

[Dmitri Sologoubenko]

Hello!

I'm a asterisk<>ss7 newbie, so need some help :)

I've changed and recompiled ss7linktest utility distributed in libss7
trunk, because it was working only with "national" network indication,
while my ss7 telco uses "national_spare".

How can I post the modified source or a diff patch so people can set
network indication type from command line?

And, how can I interpret the output of my ss7linktest?

Starting link 1
Link state change: IDLE -> NOTALIGNED
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 02 ]
FSN: 127 FIB 1
BSN: 127 BIB 1
<[0] LSSU SIE

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
[0] MTP2 link up
Len = 9 [ ff 80 06 c0 04 80 f0 02 17 ]
FSN: 0 FIB 1
BSN: 127 BIB 1
> >[0] MSU
[ ff 80 06 ]
        Network Indicator: 3 Priority: 0 User Part: NET_MNG (0)
        [ c0 ]
        OPC 3010 DPC 4 SLS 0
        [ 04 80 f0 02 ]
        H0: 7 H1: 1
        Message type: TRA
        [ 17 ]

Len = 20 [ ff 81 11 c1 04 80 f0 02 11 a0 32 35 36 34 32 38 36 32 38 38 ]
FSN: 1 FIB 1
BSN: 127 BIB 1
> >[0] MSU
[ ff 81 11 ]
        Network Indicator: 3 Priority: 0 User Part: STD_TEST (1)
        [ c1 ]
        OPC 3010 DPC 4 SLS 0
        [ 04 80 f0 02 ]
        H0: 1 H1: 1
        [ 11 ]

Len = 25 [ ff 80 16 c1 c2 cb 00 00 11 f0 aa aa aa aa aa aa aa aa aa aa
aa aa aa aa aa ]
FSN: 0 FIB 1
BSN: 127 BIB 1
<[0] MSU
[ ff 80 16 ]
        Network Indicator: 3 Priority: 0 User Part: STD_TEST (1)
        [ c1 ]
        OPC 3 DPC 3010 SLS 0
        [ c2 cb 00 00 ]
        H0: 1 H1: 1
        [ 11 ]

Len = 25 [ 80 82 16 c1 03 80 f0 02 21 f0 aa aa aa aa aa aa aa aa aa aa
aa aa aa aa aa ]
FSN: 2 FIB 1
BSN: 0 BIB 1
> >[0] MSU
[ 80 82 16 ]
        Network Indicator: 3 Priority: 0 User Part: STD_TEST (1)
        [ c1 ]
        OPC 3010 DPC 3 SLS 0
        [ 03 80 f0 02 ]
        H0: 1 H1: 2
        [ 21 ]

[0] --- SS7 Up ---
Len = 14 [ 80 83 0b c5 04 80 f0 12 01 00 17 01 01 17 ]
FSN: 3 FIB 1
BSN: 0 BIB 1
> >[0] MSU
[ 80 83 0b ]
        Network Indicator: 3 Priority: 0 User Part: ISUP (5)
        [ c5 ]
        OPC 3010 DPC 4 SLS 1
        [ 04 80 f0 12 ]
                CIC: 1
                [ 01 00 ]
                Message Type: GRS
                [ 17 ]
                --VARIABLE LENGTH PARMS[1]--
                Range and status:
                        Range: 23
                        [ 01 17 ]


What is happening on my SS7 link?

Should I run the ss7linktest utility only on bchan number or freely on
any channel number?

Thanks in advance for your replies,

Dmitri Sologoubenko