We are experiencing some voice quality issues when calls routed through BT . There is a silence of 5-10 seconds before actual voice is being received. The problem has been reported to BT. The same problem are also being reported by other providers.

UPDATE 08/10/2009 12:15pm

BT is still in the process to resolve this issue.

UPDATE 08/10/2009 10:00pm

BT is currently investigating an issue on the Kingston SBC and they are looking to re-balance the traffic by working with certain customers to move traffic. This issue has been escalated within BT and within the supplier and dealing with this as a matter of urgency.

UPDATE 12/10/2009 5:55pm

BT have placed a temporary solution which will remain in place until all Design parameters have been cross checked with Vendor Support to ensure all traffic profiles are handled with optimum efficiency.

We have experienced loos of connectivity for around 10 seconds to our sip registration server in one our data centers. The issue has been resolved. We apologise for any inconvenience caused.

We are experiencing some issues on our inbound traffic. Our engineers currently investigating this problem.

UPDATE 02:35pm:

Our engineers still investigating this problem.

UPDATE 02:55pm:

It seems to be a latency issue in the network from one of our service providers. Our engineers and engineers from one of our service providers still investigating the problem.

UPDATE 03:25pm:

The network issue settled down. However, the engineers still looking into the problem occurred earlier.

UPDATE 08:30pm

The issue occurred earlier today was down to our sip server where its not responding fast enough on some sip packages. However, we awaiting confirmation from our senior engineer whether the cause of the problem was down to our sip server.

UPDATE 06/10/2009 2:25pm

The issue has been resolved. The problem caused by some delays in our network where our sip server couldn’t response properly.

We are experiencing some problems with the voice quality. Our engineers are investigating the cause of this problem.

UPDATE 11:40am

Our engineers found the problem and they resolving the issue now.

UPDATE 11:45am

Our engineers arrived in our data centre in telecity.

UPDATE 12:05pm

Our engineers resolved the problem.

Cause of problem:

The bad call quality caused by a denial of service (DoS) attack coming into our inbound traffic. However, our firewall and high security measures in place prevented any further intrusion into our servers.  But due to the continuously high load traffic into our inbound traffic caused some congestion in our network.  Our engineers were able to cut-off the source where the high load traffic comes from.

We apologise for any inconvenience caused.

We have tried to investigate the problem however, the problem has resolved itself and we are unable to trace the cause of the fault. This caused a call quality issue for around 5 minutes.

We are experiencing some voice quality issue which we are currently investigating.

This problem only occur on a specific ISP (Internet Services Provider).