SV9100 - All Lines Get Stuck on Busy/Camp

[JBNB]

Hello. We're having another issue with our SV9100 system. After a while our system seems to stop releasing our SIP lines. A line or two will show as Busy/Camp and then after a couple of days it happens to all of our 12 lines. Once that happens I can reboot the system which resolves the issue for a few days and then it starts happening again. Once all of the lines are "stuck" we can't make outgoing calls nor can we receive incoming calls.

Our SIP provider says that they can't see any issues on their end so I was wondering if anyone here had any ideas on what the problem could be?

Thanks!

 

[CoralTech]

You need to wireshark this and find out what is going on and check your software level on the SV. v12 is out now.

 

[OzzieGeorge]

Could this be that the lines are getting locked to each other (EG trunk to trunk transfer). Whilst sip trunks should clear down in these circumstances, a way of alleviating that problem (if this is what it is) would be to turn on long conversation cutoff in 14-01-14 (you could also check 14-01-15 just in case). If this clears the problem, you should still go looking for the reason they don't automatically clear down straight away but at least it could stop you having to reboot till you find the cause

 

[JBNB]

Thank you for the replies. I'll try changing the setting in 14-01-14 and see if it buys me some time. I'm at the point where I'm rebooting the system a few times a day.

I'll start capturing packets as well.

 

[JBNB]

I have been getting some packet captures and I still have no idea why the lines are getting stuck on Busy/Camp. Here's a sample of what the capture looks like:

160 16:53:19.163932 92.204.172.102 X.X.X.X SIP/SDP 1252 Request: INVITE sip:############@<PUBLIC IP>:5062 |
161 16:53:19.246142 X.X.X.X 92.204.172.102 SIP 378 Status: 100 Trying |
162 16:53:19.306181 X.X.X.X 92.204.172.102 SIP 410 Status: 486 Busy Here |
163 16:53:19.427231 92.204.172.102 X.X.X.X SIP 458 Request: ACK sip:############@<PUBLIC IP>:5062 |
164 16:53:19.688390 X.X.X.X 92.204.184.94 SIP 410 Status: 486 Busy Here |
165 16:53:20.106192 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |
166 16:53:21.488413 X.X.X.X 92.204.184.94 SIP 410 Status: 486 Busy Here |
167 16:53:21.921036 92.204.184.94 X.X.X.X SIP/SDP 1245 Request: INVITE sip:###########1@<PUBLIC IP>:5062 |
168 16:53:21.995908 X.X.X.X 92.204.184.94 SIP 375 Status: 100 Trying |
169 16:53:22.055902 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |
170 16:53:22.536125 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |
171 16:53:23.495918 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |
172 16:53:23.735978 X.X.X.X 92.204.184.94 SIP 410 Status: 486 Busy Here |
173 16:53:24.095914 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |
174 16:53:25.535978 X.X.X.X 92.204.184.94 SIP 410 Status: 486 Busy Here |
175 16:53:25.536207 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |
176 16:53:27.695915 X.X.X.X 92.204.184.94 SIP 410 Status: 486 Busy Here |
177 16:53:28.115923 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |
178 16:53:29.495921 X.X.X.X 92.204.184.94 SIP 407 Status: 486 Busy Here |

There aren't any other calls coming in or going out of the system at this time. I'm not even sure where to look at this point. Does anyone have any ideas?

Thanks!