Ongoing Delay to O2 Traffic File Delivery

Update timeline

1. investigating Oct 12, 2026, 02:41 PM UTC

   We are currently aware of an ongoing issue within the O2 network affecting the delivery of HSERC, GSERC and CSERC traffic files. The incident is impacting the receipt of domestic voice traffic, domestic data usage and roaming data records. As a result, we have received significantly reduced volumes of traffic data since 9 October. We are actively engaging with O2 and continue to escalate the matter as a priority to ensure service is restored as quickly as possible. At this time, O2 expects that any affected traffic records will be delivered retrospectively once the underlying issue has been resolved. We are therefore not anticipating any permanent loss of usage data and will process backdated records as soon as they become available. We appreciate your patience and understanding while O2 works to resolve this issue. Further updates will be provided as additional information becomes available. Status: Ongoing Affected Services: HSERC, GSERC and CSERC file delivery Impact: Delayed domestic and roaming usage records Issue Start Date: 9 October Next Update: To be provided when further information is received from O2

2. investigating Oct 16, 2026, 03:45 PM UTC

   Service Update: O2 Traffic File Delivery Status: Service Restoration in Progress We are pleased to confirm that the issue affecting CSERC traffic file delivery has been resolved, and files are now being received and processed normally. We have also received a positive update from O2 regarding the ongoing GSERC and HSERC delivery issues. The delivery process for both services has now successfully restarted. To minimise the risk of further incidents, O2 is initially processing smaller volumes of data while service is stabilised. O2 currently expects the first deliveries of impacted GSERC and HSERC files to be received over the weekend. A catch-up plan for the backlog of delayed files is being developed, with an initial timeline expected early next week. We will provide further updates as soon as more information becomes available. There remains no indication of any permanent loss of usage data. Any delayed records will be processed and rated as soon as they are received. Service Status Summary CSERC: Restored and processing normally GSERC: Delivery process restarted, initial volumes being processed HSERC: Delivery process restarted, initial volumes being processed Issue Start Date: 9 October Current Status: Service restoration and backlog recovery in progress Next Update: Following further information from O2 regarding the catch-up plan Thank you for your continued patience while we work with O2 to restore full service. Further updates will be provided as they become available.

3. investigating Oct 19, 2026, 01:36 PM UTC

   O2 HSERC/GSERC Incident Update We have received a further update from O2 regarding the ongoing HSERC and GSERC file delivery issue. The GSERC and HSERC recovery processes continue to operate successfully following the restart activities implemented on Friday. O2 has advised that progress remains positive, with no indication of the issue regressing or the recovery effort moving backwards. Key points from the latest update: We are currently awaiting a further update regarding the timing of file deliveries and will share this information as soon as it becomes available. At this stage, it does not appear that any HSERC or GSERC deliveries were received over the weekend. Although file delivery has not yet resumed, O2 has confirmed that the restarted processes continue to run as expected and that recovery activities remain on track. The current focus remains on progressing towards the first successful deliveries while maintaining system stability. We will continue to monitor the situation closely and provide further updates as soon as additional information is received from O2. Thank you for your continued patience while service restoration activities remain underway.

4. investigating Oct 21, 2026, 10:15 AM UTC

   We continue to engage closely with O2 regarding the ongoing HSERC and GSERC (Domestic and Roaming Data) file delivery issue. O2 has advised that its system recovery processes were restarted last week and that efforts to process the backlog of data remain ongoing. However, O2 is currently unable to confirm when the generation and delivery of the missing CDRs will resume. For clarity, this issue is affecting all O2 B2B Wholesale partners and O2 Business. We fully recognise the impact that the absence of usage data is having on your ability to support customers, manage services and provide accurate reporting. We remain in regular contact with O2 and are actively monitoring progress. A further update will be provided tomorrow morning, or sooner should any new information become available. Thank you for your continued patience and understanding while recovery activities remain in progress.