17 Apr 23:00:00
[VoIP and SIMs] Call failures on SIP2SIM - Closed
Details
Posted: 16 Apr 19:13:47
Calls are currently failing to/from SIP2SIM products. Reports also indicate SMS failures.
Our upstream carrier is aware of the issue and currently has an open issue (ref 8273) regarding this issue.
Customers with a O2/EU SIP2SIM product may be able to place calls by manually selecting the roaming profile, but note that the handset will roam back to the O2 profile after a short time. No such workaround is currently known for regular SIP2SIMs.

Information from our upstream carriers reports that "USSD requests on the O2 profile are failing" and they are reporting with each update that the "02 MVNO team are investigating". Further updates are expected at 21:00
Update
16 Apr 20:47:36
As of 20:42, our upstream supplier has advised the following:
BT have a major transmission outage in Frankfurt which has taken down their links with Telefonica. Engineers are currently on site investigating
Update
16 Apr 21:46:49
Our upstream carriers have advised the following at 21:39 :
BT have confirmed that service has been restored Engineers are continuing to monitor
Update
16 Apr 23:46:46
As of approximately 22:35 we received customer reports that SIM2SIM is failing again.
An update has been received from our upstream carrier as of 23:42 and reads as follows:
Service had restored for a short while between roughly 20:30 - 22:30 BST, however engineer has confirmed that the service is down again. Engineers are continuing to investigate
Update
17 Apr 08:17:17
Overnight updates from Carrier:

06:46 BT are still seeing major signalling issues for 02 traffic. 02 and their carrier BT are working to resolve as soon as possible.

05:41 O2 continue their investigations with the support of their signalling provider BT.

04:37 O2 are continuing to investigate with the support of their signalling provider BT.

03:37 O2 are continuing to investigate with the support of their signalling provider BT.

02:30 O2 are continuing to investigate with the support of their signalling provider BT.

01:33 O2 continue to investigate with the support of their signalling provider BT.

00:36 O2 are continuing to investigate with the support of their signalling provider BT.

Update
17 Apr 08:55:54
08:27 (Update from Carrier) BT are still seeing major signalling issues for 02 traffic. 02 and their carrier BT are working to resolve as soon as possible.
Update
17 Apr 09:34:21
(Update from Carrier) There are some reports that the service is working again - this is unconfirmed my the carrier at the moment.
Update
17 Apr 10:34:37
10:18 (Update from Carrier) Service remains unstable and BT engineers are continuing to work to restore network stability.
Update
17 Apr 11:44:09
11:12 (Update from Carrier) Service remains unstable and BT engineers are continuing to work to restore network stability.
Update
17 Apr 14:02:43
13:48 (Update from Carrier) BT & O2 continue to work towards a resolution, service remains unstable at this time
Update
17 Apr 15:02:20
14:52 (Update from Carrier): Since late yesterday afternoon, O2 have been experiencing signalling issues, and due to the way O2 route their signalling traffic, this has been impacting the signalling traffic back to Manx Telecom. Manx Telecom have been in regular contact with O2 since the issue was first identified, and we have escalated our ticket within O2 to the highest possible level. O2 have in turn escalated their ticket within Telefonica. We continue to chase in order to obtain a timescale for a permanent fix to be implemented. As soon as we have a further update, we will let you know.
Update
17 Apr 19:58:41
18:13 (Update from carrier) BT & O2 continue to work towards a resolution, service remains unstable at this time
Update
17 Apr 23:00:57
22:10 (update from carrier) O2 have diverted their signalling traffic to another service provider to try resolve the issue. Engineers continue to monitor.
Update
17 Apr 23:45:14
23:42 (Update from Carrier) Service has remained stable since O2 diverted traffic. Engineers are continuing to monitor
VoIP and SIMs Users Affected 100%
Started 16 Apr 19:00:00 by Customer report
Closed 17 Apr 23:00:00
Cause Carrier