We will be performing a number of important system updates at around midnight tonight.  Services affected will be:

• VoIP calls/registrations for some NAT customers - however this does not affect customers on nat.gradwell.net which is the default for most customers.
• SSL sites hosted on uk-ssl.com
• Control Panel logins.
• SMTP/POP3/IMAP email services (should be very minimal impact because only 1 server in the cluster is being updated)
• Zimbra email services.

The services above may all have intermittent outages of a few minutes per service.  Please accept our apologies for any inconvenience this may cause.

At midnight tonight we will be doing some system configuration changes on the servers in the NewSIP cluster.  This work will affect all calls and registrations for customers using the NewSIP service (newsip.gradwell.net) on their VoIP phones.

The work is intended to fix a problem with intermittent de-registrations caused by a clock synchronization issue.  The servers will require a reboot so there is likely to be some service disruption although we will attempt to minimize disruption through the clustered nature of the NewSIP service.

Update (00:35): This maintenance ran past the scheduled window due to one of the servers taking longer than expected to reboot after the change was applied.  Please accept our apologies for any inconvenience this may have caused.

Gradwell will be carrying out routine maintenance on our VoIP platform on Thursday evening.  During this time, the following VoIP services may be unavailable:

• VoIP control panel

This affects all VoIP customers.

Planned maintenance work:

• VoIP reseller admin panel

This means that customers, including cobranded end users will all have to download a PDF form, print, sign, and post it back to Gradwell.

This change has been completed for security reasons, and will remain in place until further notice.

In order to add some new storage for voice prompts and music on hold, we need to reboot the lon-pbx-7 Centrex server tomorrow evening.  We estimate the downtime will only be a few minutes however all calls and registrations will be dropped.

We apologise for the extended partial outage with this service. If you are having issues with any VoIP-related service and your extensions register with lon-pbx-7, please ensure you are using our primary server - 193.111.201.28. Depending on your phone brand and model, you may need to reboot your phone in order to force it off our backup server.

If the problem persists, please contact our support department and we will be happy to assist.

The following maintenance will be carried out on our NewSIP platform:

• Add support for 1571.

Customers using NewSIP should be unaffected during this maintenance, but may experience dropped calls.

Customers using lon-pbx-* will be unaffected by this work.

Calls to Three Mobile phones will now cost:

• Peak: 10pence per min (ppm)
• Off Peak Weekdays: 9ppm
• Weekends: 16ppm

Our other discount tariffs have been adjusted accordingly and specific customers have been notified.

As part of our ongoing network upgrades, we are planning to migrate a number of our Disk Storage arrays and VMWare servers onto our new ethernet network in Telehouse.

There will be a few brief interuptions (sub 1 min) to VoIP and Email services whilst cables are moved.

In the event of any unforseen problems, there is the potential that we may experience longer down time, particularly with respect to our disk storage arrays. However, we have already done some migrations onto the new network and are confident we are aware and have managed the potential risks.

To perform some essential server maintenance one of our Centrex servers (lon-pbx-6.gradwell.net) will be briefly offline on Tuesday 29th July at approximately 22:00.  All active calls and registrations will be dropped however we expect the downtime to be no more than a few minutes, and if all goes well it should be much shorter.

Please accept our apologies for any inconvenience this work may cause.

Update (22:25)

This work has been completed and the new server appears to be fully functional.  Users on lon-pbx-6 will have experienced approximately 5 minutes of intermittent problems between 22:16 and 22:21.