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<p class=MsoNormal><span style='color:#1F497D'>Dear All,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>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.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[root@asterisk ~]# tail -f
/var/log/asterisk/messages<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:06:16] WARNING[19978]
chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:06:23]
WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:06:32]
NOTICE[19999] chan_sip.c: Registration from '<<a
href="sip:1114@192.168.5.252:5060">sip:1114@192.168.5.252:5060</a>>' failed
for '192.168.5.253' - No matching peer found<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:06:42]
WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:06:48]
WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:06:55]
WARNING[19978] chan_dahdi.c: REL on channel (CIC 30) without owner!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:07:02]
NOTICE[19999] chan_sip.c: Registration from '<<a
href="sip:1114@192.168.5.252:5060">sip:1114@192.168.5.252:5060</a>>' failed
for '192.168.5.253' - No matching peer found<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:07:03]
WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:07:18]
WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:07:21]
WARNING[19978] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 5 03:07:32]
WARNING[19978] chan_dahdi.c: REL on channel (CIC 29) without owner!<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Some more information in
asterisk logs</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 4 19:12:39]
WARNING[3298] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 4 19:12:41]
VERBOSE[3298] chan_dahdi.c: MTP2 link up (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[Mar 4 19:12:42]
WARNING[3298] chan_dahdi.c: MTP2 link down (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Here is the output of Asterisk
when SS7 is up</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Verbosity is at least 3<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>MTP2 link up (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Received out of sequence MSU w/
fsn of 1, lastfsnacked = 127, requesting retransmission<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>MTP2 link up (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Received out of sequence MSU w/
fsn of 1, lastfsnacked = 127, requesting retransmission<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Received out of sequence MSU w/
fsn of 1, lastfsnacked = 127, requesting retransmission<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>MTP2 link up (SLC 0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";
color:gray'><o:p> </o:p></span></b></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal>Asterisk Output<span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal> -- Reconfigured channel 1, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 2, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 3, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 4, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 5, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 6, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 7, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 8, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 9, SS7 signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 10, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 11, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 12, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 13, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 14, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 15, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 17, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 18, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 19, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 20, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 21, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 22, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 23, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 24, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 25, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 26, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 27, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 28, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 29, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 30, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Reconfigured channel 31, SS7
signalling<o:p></o:p></p>
<p class=MsoNormal> -- Automatically generated pseudo channel<o:p></o:p></p>
<p class=MsoNormal> == Starting SS7 linkset on span 1<o:p></o:p></p>
<p class=MsoNormal>--- SS7 Down ---<o:p></o:p></p>
<p class=MsoNormal>asterisk*CLI><o:p></o:p></p>
<p class=MsoNormal>asterisk*CLI><o:p></o:p></p>
<p class=MsoNormal>asterisk*CLI><o:p></o:p></p>
<p class=MsoNormal>MTP2 link up (SLC 0)<o:p></o:p></p>
<p class=MsoNormal>--- SS7 Up ---<o:p></o:p></p>
<p class=MsoNormal>Resetting CICs 1 to 30<o:p></o:p></p>
<p class=MsoNormal>Received out of sequence MSU w/ fsn of 5, lastfsnacked = 2,
requesting retransmission<o:p></o:p></p>
<p class=MsoNormal>Got reset acknowledgement from CIC 1 to 30.<o:p></o:p></p>
<p class=MsoNormal>MTP2 link up (SLC 0)<o:p></o:p></p>
<p class=MsoNormal>MTP2 link up (SLC 0)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Configuration File /etc/asterisk/chan_dahdi.conf<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>[channels]<o:p></o:p></p>
<p class=MsoNormal>language=en<o:p></o:p></p>
<p class=MsoNormal>context=from-internal<o:p></o:p></p>
<p class=MsoNormal>switchtype=euroisdn<o:p></o:p></p>
<p class=MsoNormal>signalling=ss7<o:p></o:p></p>
<p class=MsoNormal>toneduration=100<o:p></o:p></p>
<p class=MsoNormal>usecallerid=yes<o:p></o:p></p>
<p class=MsoNormal>callwaiting=yes<o:p></o:p></p>
<p class=MsoNormal>usecallingpres=yes<o:p></o:p></p>
<p class=MsoNormal>callwaitingcallerid=yes<o:p></o:p></p>
<p class=MsoNormal>threewaycalling=yes<o:p></o:p></p>
<p class=MsoNormal>transfer=yes<o:p></o:p></p>
<p class=MsoNormal>cancallforward=yes<o:p></o:p></p>
<p class=MsoNormal>callreturn=yes<o:p></o:p></p>
<p class=MsoNormal>echocancel=no<o:p></o:p></p>
<p class=MsoNormal>echocancelwhenbridged=yes<o:p></o:p></p>
<p class=MsoNormal>rxgain=1.0<o:p></o:p></p>
<p class=MsoNormal>txgain=1.0<o:p></o:p></p>
<p class=MsoNormal>group=1<o:p></o:p></p>
<p class=MsoNormal>callgroup=1<o:p></o:p></p>
<p class=MsoNormal>ss7type = itu<o:p></o:p></p>
<p class=MsoNormal>ss7_called_nai=dynamic<o:p></o:p></p>
<p class=MsoNormal>ss7_calling_nai=dynamic<o:p></o:p></p>
<p class=MsoNormal>linkset = 1<o:p></o:p></p>
<p class=MsoNormal>pointcode = 5607<o:p></o:p></p>
<p class=MsoNormal>adjpointcode = 5366<o:p></o:p></p>
<p class=MsoNormal>defaultdpc = 5366<o:p></o:p></p>
<p class=MsoNormal>networkindicator=national<o:p></o:p></p>
<p class=MsoNormal>mtp2=1<o:p></o:p></p>
<p class=MsoNormal>sigchan = 16<o:p></o:p></p>
<p class=MsoNormal>cicbeginswith = 1<o:p></o:p></p>
<p class=MsoNormal>channel = 1-15,17-31<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>;cicbeginswith = 32<o:p></o:p></p>
<p class=MsoNormal>;channel =32-62<o:p></o:p></p>
<p class=MsoNormal>;cicbeginswith = 63<o:p></o:p></p>
<p class=MsoNormal>;channel =63-93<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>jitterbuffers=4<o:p></o:p></p>
<p class=MsoNormal>jbenable = yes<o:p></o:p></p>
<p class=MsoNormal>jbmaxsize = 400<o:p></o:p></p>
<p class=MsoNormal>jbresyncthreshold = 1000<o:p></o:p></p>
<p class=MsoNormal>jbimpl = fixed<o:p></o:p></p>
<p class=MsoNormal>jblog = no<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";
color:gray'><o:p> </o:p></span></b></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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