phoneguy97
Technical User
Hi Everyone,
I have five IP Office 500v2 all running 7.0(232702). I have VPN tunnels established between all sites using Cisco 5505 and 5512 firewalls. We are experiencing dropped calls at random call times Anywhere from 30 secs to over an hour. The problem seems to be worse between 8AM and 10AM. When the calls drop the phones display unobtainable and when the voicemail is not accessible users see busy. We have spoken with Cisco and they have told us after testing and monitoring that the VPN is not going down. We have also setup QoS on the firewalls and we are still having this issue. Below are some syslog files we have collected from one of the phone systems. It looks like the SCN trunks may be going down. Any help is much appreciated. We were also thinking of trying to use the built in ipsec capability on the phone system and bypass our network gear all together. Should we do this?
2013-09-30 17:21:06 User Info 10.1.99.225 Sep 30 17:21:19 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 17:20:47 User Info 10.1.99.225 Sep 30 17:21:00 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 17:20:28 User Info 10.1.99.225 Sep 30 17:20:41 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 13:22:49 User Info 10.1.99.225 Sep 30 13:23:01 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:22:30 User Info 10.1.99.225 Sep 30 13:22:42 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:22:11 User Info 10.1.99.225 Sep 30 13:22:23 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:19:20 User Info 10.1.99.225 Sep 30 13:19:32 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:19:03 User Info 10.1.99.225 Sep 30 13:19:15 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 13:19:01 User Info 10.1.99.225 Sep 30 13:19:13 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:18:44 User Info 10.1.99.225 Sep 30 13:18:56 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 13:18:42 User Info 10.1.99.225 Sep 30 13:18:54 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
I have five IP Office 500v2 all running 7.0(232702). I have VPN tunnels established between all sites using Cisco 5505 and 5512 firewalls. We are experiencing dropped calls at random call times Anywhere from 30 secs to over an hour. The problem seems to be worse between 8AM and 10AM. When the calls drop the phones display unobtainable and when the voicemail is not accessible users see busy. We have spoken with Cisco and they have told us after testing and monitoring that the VPN is not going down. We have also setup QoS on the firewalls and we are still having this issue. Below are some syslog files we have collected from one of the phone systems. It looks like the SCN trunks may be going down. Any help is much appreciated. We were also thinking of trying to use the built in ipsec capability on the phone system and bypass our network gear all together. Should we do this?
2013-09-30 17:21:06 User Info 10.1.99.225 Sep 30 17:21:19 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 17:20:47 User Info 10.1.99.225 Sep 30 17:21:00 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 17:20:28 User Info 10.1.99.225 Sep 30 17:20:41 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 13:22:49 User Info 10.1.99.225 Sep 30 13:23:01 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:22:30 User Info 10.1.99.225 Sep 30 13:22:42 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:22:11 User Info 10.1.99.225 Sep 30 13:22:23 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:19:20 User Info 10.1.99.225 Sep 30 13:19:32 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:19:03 User Info 10.1.99.225 Sep 30 13:19:15 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 13:19:01 User Info 10.1.99.225 Sep 30 13:19:13 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225
2013-09-30 13:18:44 User Info 10.1.99.225 Sep 30 13:18:56 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 30 IP Address: 10.1.97.225
2013-09-30 13:18:42 User Info 10.1.99.225 Sep 30 13:18:54 10.1.99.225 TRP|No response to IP trunk call request. H.323 Line: 20 IP Address: 10.1.98.225