[asterisk-ss7] SS7 Linkset issue...

Kaloyan Kovachev kkovachev at varna.net
Wed Dec 14 06:26:45 CST 2016


Hi,
You need to provide more info about your setup.
There are two SS7 options for Asterisk (chan_ss7 and lib_ss7) with 
several versions each, so you need to tell us which version of Asterisk 
and SS7 are in use, plus your config.

 From your log, my guess is that you are using lib_ss7, but please note 
that it's proper functioning depends heavily on timers and they need to 
be explicitly defined (there is an example config ss7.timers in 
asterisk's samples, which you may simply #include in chan_dahdi.conf ) 
for each and every linkset

On 2016-12-14 13:40, Andre J. Walker wrote:

> Hey Guys,
> 
> First of all, I am very new to Asterisk but a friend and myself are 
> trying to setup a connection to my local telco. We are running Asterisk 
> with SS7 support, We managed to get the SS7 Linkset up with the telco 
> but its not staying up, its does stay up for awhile then constantly 
> starts disconnecting and reconnecting. We exchanged settings with the 
> with the telco and both sides seems to be configured correctly (the 
> linkset does come up) but the reason for the for the disconnecting we 
> do get. Can you offer up any ideas?... I will post the log below. 
> Thanks in advance.
> 
> [1] Len = 4 [ ff ff 01 03 ]
> [1] FSN: 127 FIB 1
> [1] BSN: 127 BIB 1
> [1] <[0] LSSU SIOS
> [1]
> [1] Link state change: INSERVICE -> IDLE
> [1] Link state change: IDLE -> NOTALIGNED
> [1] Len = 4 [ ff ff 01 00 ]
> [1] FSN: 127 FIB 1
> [1] BSN: 127 BIB 1
> [1] >[0] LSSU SIO
> [1]
> Linkset 1: Processing event: Unknown Event
> [Dec 13 18:11:51] WARNING[32380]: sig_ss7.c:888 ss7_linkset: MTP2 link 
> down (SLC 0)
> [1] Len = 4 [ ff ff 01 00 ]
> [1] FSN: 127 FIB 1
> [1] BSN: 127 BIB 1
> [1] <[0] LSSU SIO
> [1]
> [1] Link state change: NOTALIGNED -> ALIGNED
> [1] Len = 4 [ ff ff 01 02 ]
> [1] FSN: 127 FIB 1
> [1] BSN: 127 BIB 1
> [1] >[0] LSSU SIE
> [1]
> [1] Len = 4 [ ff ff 01 02 ]
> [1] FSN: 127 FIB 1
> [1] BSN: 127 BIB 1
> [1] <[0] LSSU SIE
> [1]
> [1] Link state change: ALIGNED -> PROVING
> [1] T4 expired!
> [1] Link state change: PROVING -> ALIGNEDREADY
> [1] Len = 3 [ ff ff 00 ]
> [1] FSN: 127 FIB 1
> [1] BSN: 127 BIB 1
> [1] >[0] FISU
> [1]
> [1] Len = 3 [ ff ff 00 ]
> [1] FSN: 127 FIB 1
> [1] BSN: 127 BIB 1
> [1] <[0] FISU
> [1]
> [1] Link state change: ALIGNEDREADY -> INSERVICE
> Linkset 1: Processing event: Unknown Event
> MTP2 link up (SLC 0)
> [1] Len = 20 [ ff 80 11 81 c4 09 3c 05 11 a0 32 35 36 34 32 38 36 32 38 
> 38 ]
> [1] FSN: 0 FIB 1
> [1] BSN: 127 BIB 1
> [1] >[0] MSU
> [1] [ ff 80 11 ]
> [1] Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
> [1] [ 81 ]
> [1] OPC 5360 DPC 2500 SLS 0
> [1] [ c4 09 3c 05 ]
> [1] H0: 1 H1: 1
> [1] [ 11 ]
> [1]
> [1] Len = 25 [ ff 80 16 81 f0 14 71 02 11 f0 aa aa aa aa aa aa aa aa aa 
> aa aa aa aa aa aa ]
> [1] FSN: 0 FIB 1
> [1] BSN: 127 BIB 1
> [1] <[0] MSU
> [1] [ ff 80 16 ]
> [1] Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
> [1] [ 81 ]
> [1] OPC 2500 DPC 5360 SLS 0
> [1] [ f0 14 71 02 ]
> [1] H0: 1 H1: 1
> [1] [ 11 ]
> [1]
> [1] Len = 25 [ 80 81 16 81 c4 09 3c 05 21 f0 aa aa aa aa aa aa aa aa aa 
> aa aa aa aa aa aa ]
> [1] FSN: 1 FIB 1
> [1] BSN: 0 BIB 1
> [1] >[0] MSU
> [1] [ 80 81 16 ]
> [1] Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
> [1] [ 81 ]
> [1] OPC 5360 DPC 2500 SLS 0
> [1] [ c4 09 3c 05 ]
> [1] H0: 1 H1: 2
> [1] [ 21 ]
> [1]
> Linkset 1: Processing event: SS7_EVENT_UP
> [1] Len = 20 [ 80 81 11 81 f0 14 71 02 21 a0 32 35 36 34 32 38 36 32 38 
> 38 ]
> [1] FSN: 1 FIB 1
> [1] BSN: 0 BIB 1
> [1] <[0] MSU
> [1] [ 80 81 11 ]
> [1] Network Indicator: 2 Priority: 0 User Part: STD_TEST (1)
> [1] [ 81 ]
> [1] OPC 2500 DPC 5360 SLS 0
> [1] [ f0 14 71 02 ]
> [1] H0: 1 H1: 2
> [1] [ 21 ]
> 
> Regards,
> Andre



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