[asterisk-ss7] SS7 Link Problem

[linuxgurus at gmail.com]

Dear All,

 

I am facing an issue with ss7. I don't understand why SS7 link break every
15 to 30 sec. A quick response needed from your side. Please see the below
output and config files.

 

 

[root at asterisk ~]# tail -f /var/log/asterisk/messages

[Mar  5 03:06:16] WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  5 03:06:23] WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  5 03:06:32] NOTICE[19999] chan_sip.c: Registration from
'<sip:1114 at 192.168.5.252:5060>' failed for '192.168.5.253' - No matching
peer found

[Mar  5 03:06:42] WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  5 03:06:48] WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  5 03:06:55] WARNING[19978] chan_dahdi.c: REL on channel (CIC 30)
without owner!

[Mar  5 03:07:02] NOTICE[19999] chan_sip.c: Registration from
'<sip:1114 at 192.168.5.252:5060>' failed for '192.168.5.253' - No matching
peer found

[Mar  5 03:07:03] WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  5 03:07:18] WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  5 03:07:21] WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  5 03:07:32] WARNING[19978] chan_dahdi.c: REL on channel (CIC 29)
without owner!

 

Some more information in asterisk logs

 

[Mar  4 19:12:39] WARNING[3298] chan_dahdi.c: MTP2 link down (SLC 0)

[Mar  4 19:12:41] VERBOSE[3298] chan_dahdi.c: MTP2 link up (SLC 0)

[Mar  4 19:12:42] WARNING[3298] chan_dahdi.c: MTP2 link down (SLC 0)

 

 

 

 

Here is the output of Asterisk when SS7 is up

 

Verbosity is at least 3

MTP2 link up (SLC 0)

Received out of sequence MSU w/ fsn of 1, lastfsnacked = 127, requesting
retransmission

MTP2 link up (SLC 0)

Received out of sequence MSU w/ fsn of 1, lastfsnacked = 127, requesting
retransmission

Received out of sequence MSU w/ fsn of 1, lastfsnacked = 127, requesting
retransmission

MTP2 link up (SLC 0)

 

 

 

Asterisk Output

   -- Reconfigured channel 1, SS7 signalling

    -- Reconfigured channel 2, SS7 signalling

    -- Reconfigured channel 3, SS7 signalling

    -- Reconfigured channel 4, SS7 signalling

    -- Reconfigured channel 5, SS7 signalling

    -- Reconfigured channel 6, SS7 signalling

    -- Reconfigured channel 7, SS7 signalling

    -- Reconfigured channel 8, SS7 signalling

    -- Reconfigured channel 9, SS7 signalling

    -- Reconfigured channel 10, SS7 signalling

    -- Reconfigured channel 11, SS7 signalling

    -- Reconfigured channel 12, SS7 signalling

    -- Reconfigured channel 13, SS7 signalling

    -- Reconfigured channel 14, SS7 signalling

    -- Reconfigured channel 15, SS7 signalling

    -- Reconfigured channel 17, SS7 signalling

    -- Reconfigured channel 18, SS7 signalling

    -- Reconfigured channel 19, SS7 signalling

    -- Reconfigured channel 20, SS7 signalling

    -- Reconfigured channel 21, SS7 signalling

    -- Reconfigured channel 22, SS7 signalling

    -- Reconfigured channel 23, SS7 signalling

    -- Reconfigured channel 24, SS7 signalling

    -- Reconfigured channel 25, SS7 signalling

    -- Reconfigured channel 26, SS7 signalling

    -- Reconfigured channel 27, SS7 signalling

    -- Reconfigured channel 28, SS7 signalling

    -- Reconfigured channel 29, SS7 signalling

    -- Reconfigured channel 30, SS7 signalling

    -- Reconfigured channel 31, SS7 signalling

    -- Automatically generated pseudo channel

  == Starting SS7 linkset on span 1

--- SS7 Down ---

asterisk*CLI>

asterisk*CLI>

asterisk*CLI>

MTP2 link up (SLC 0)

--- SS7 Up ---

Resetting CICs 1 to 30

Received out of sequence MSU w/ fsn of 5, lastfsnacked = 2, requesting
retransmission

Got reset acknowledgement from CIC 1 to 30.

MTP2 link up (SLC 0)

MTP2 link up (SLC 0)

 

Configuration File /etc/asterisk/chan_dahdi.conf

 

[channels]

language=en

context=from-internal

switchtype=euroisdn

signalling=ss7

toneduration=100

usecallerid=yes

callwaiting=yes

usecallingpres=yes

callwaitingcallerid=yes

threewaycalling=yes

transfer=yes

cancallforward=yes

callreturn=yes

echocancel=no

echocancelwhenbridged=yes

rxgain=1.0

txgain=1.0

group=1

callgroup=1

ss7type = itu

ss7_called_nai=dynamic

ss7_calling_nai=dynamic

linkset = 1

pointcode = 5607

adjpointcode = 5366

defaultdpc = 5366

networkindicator=national

mtp2=1

sigchan = 16

cicbeginswith = 1

channel = 1-15,17-31

 

;cicbeginswith = 32

;channel =32-62

;cicbeginswith = 63

;channel =63-93

 

jitterbuffers=4

jbenable = yes

jbmaxsize = 400

jbresyncthreshold = 1000

jbimpl = fixed

jblog = no

 

 

 

 

 

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