We have received the following update from BT and they have confirmed that the issue has been resolved.

If you are still having issues then please try rebooting your phone system or hosted handset in the first instance and then raise a support ticket in the normal way if you are having further issues.

Regards,

Michael

There was a re-occurrence of this issue between 1125 and 1130.

This issue has now been resolved and root cause analysis has identified the following:

1. At 1100 we witnessed traffic rise to unusually high levels.

2. Due to the abnormally high level of this traffic our management platform alerted our NOC Team to the issue immediately.

3. The congestion caused by this increase caused a subset of customer endpoints to loose registration and/or the ability to initiate or receive new calls. At this stage all active calls were maintained.

4. The NOC Team worked to identify the root cause of the traffic increase.

5. Between 1105 and 1125 normal traffic levels resumed and all effected endpoints re-registered and were able to establish new calls.

6. Between 1125 and 1130 the congesting level of traffic re-occurred causing some endpoints to lose registration and/or be unable to make and receive calls again.

7. At 1127 the NOC Team were able to identify the source of the traffic through the use of real time and historic logging.

8. At 1130 protection mechanisms were implemented to prevent the offending source from continuing to originate traffic.

9. We are now working with the Vendor of our Core Architecture on this issue to understand why this source was allowed to introduce such high levels of traffic. Only when this has been addressed will we relax the protection mechanisms put in place.

Once again please accept our apologies for any inconvenience caused.

A further update will be supplied once investigations in conjunction with our Vendor are complete.

We have been monitoring the IP Voice service and have had an extended period of stability and no further reported issues, However we have not had confirmation from BT that the issue is now resolved.

We are working with BT to confirm that it is now resolved and will send an update when we know more

Regards,

Michael

Following the recent update from BT we are aware that there are still ongoing issue with the IP Voice service. We are working with BT to get service restored and stable as quickly as possible.

We will release further updates as and when we have more information

Regards,

Michael

We have received the following update from BT

As advised by BT below if you are still having issues then please reboot your phone system or hosted handset.

Regards,

Michael

Date : 16/01/2013

Start : 11:00

End : 11:05

The network team was alerted to an issue on the session border controller.

Some users may have briefly lost registration and some new call attempts may not have been successful.

Engineering are currently investigating the root cause and we will provide updates as more information becomes available.

Any users that have not re-registered automatically, please reboot.

Apologies for the inconvenience caused

Please be advised that we are aware of a brief outage on the IP Voice service at around 11:15am.

It would appear that services have now returned to normal, however we have raised this with BT and are working with them for confirmation.

We will release an update as and when we know more.

Regards,

Michael

Please be advised of the following emergency engineering works on the IP Voice Services platform:

Date: Tuesday 06/11/2012 from 22:00 to 23:00

Purpose

The Engineering Team will be carrying out emergency works to change the media SFP modules in one of the SBC's making up part of a carrier side SBC cluster on 06 /11/2012 between 22:00 and 23:00.

This is being done as a precautionary measure based on analysis of recent logging that has highlighted a possible hardware failure in relation to these modules.

Impact

There is no expected effect on service as a result of these works as the affected SBC will be removed from service without any effect on service and reinstated once work is completed.

Our sincere apologies for the short notice of these works.

Regards,

Comtec Network Operation Centre

For urgent operational issues please always contact noc at comtec.com or

0845 899 1423 and not any named individual