Dear Customer,
We want to inform you about upcoming planned maintenance on the KPN network that will impact your connectivity service. These updates are part of KPN’s transition to a 5G Standalone Core network, necessary regulatory changes, and network enhancements that will improve resilience, performance and security.
We appreciate that this is a lot of information to take in, but we want to be as transparent as possible and ensure you have all the details needed to prepare for these changes. We are sharing as much information as we can from KPN and are actively working with them to confirm further details and timelines. As soon as we receive additional information, we will update you accordingly to keep you fully informed.
To ensure a smooth transition, KPN will implement these upgrades in three key phases:
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Planned Maintenance Schedule & Impact
Phase 1 – Upgrading Cisco Jasper Platform (Impact on SIMPro)
Date: March 20, 20:00 CET – March 21, 07:00 CET
Impact:
• No SIM changes will be possible during this period (e.g., activations, cancellations, refreshes, and barring in SIMPro will be paused).
• Live SIM connectivity remains unaffected.
• Any SIM change requests made during this period will be queued and processed automatically once maintenance is complete.
Customer Action:
• No action required.
• If you need to make urgent SIM changes, we recommend completing them before March 20 at 20:00 CET to avoid delays.
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Phase 2 – Identity Management Migration (New HLR/HSS)
Date: April – May 2025 (We are working with KPN to confirm specific migration dates per APN.)
Impact:
• Brief disconnection when SIMs are switched to the new system.
• Active data sessions will be interrupted, and ongoing voice calls will drop during migration.
• Devices will be disconnected and should automatically reconnect within a few seconds to minutes, where they do not recover it may be necessary to reboot the device.
• Migrations will be performed one APN at a time, with each migration occurring in a 7-hour window.
Customer Action:
• No action required.
• Further details, including confirmed migration dates and times, will be communicated via email and available on the SIMPro MNO outages page at least 10 working days in advance.
• We recommend operational planning to minimise disruptions once migration dates and times are confirmed.
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Phase 3 – Packet Gateway Migration (Impact on Fixed IP Users on Private APNs)
Date: April – May 2025 (We are working with KPN to confirm specific migration dates per APN.)
Impact:
• Each APN will be migrated one at a time (12 APNs in total).
• Temporary service interruption of 10–30 minutes per APN during migration.
• Devices will be disconnected and should automatically reconnect within a few seconds to minutes after the migration, where they do not recover it may be necessary to reboot the device.
• Customers with Fixed IPs on private APNs will transition to private dynamic IPs.
• These changes are part of KPN’s improvements to network resilience and IP addressing management, please refer to the section below for more details.
Customer Action:
• No action required for most customers, connectivity should resume automatically.
• If you rely on Fixed IP or use a VPN, please review the "Changes to Network Resilience & IP Addressing" section below, as there are important updates that may require action.
• Further details, including confirmed migration dates and times, will be communicated at least 10 working days in advance via email and the SIMPro MNO outages page.
• We recommend operational planning to minimise disruptions once migration dates and times are confirmed.
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Changes to Network Resilience & IP Addressing
As a result of the planned works in Phase 2 (Identity Management Migration) and Phase 3 (Packet Gateway Migration), there will be changes to network resilience and the way IP addressing is managed on private APNs. These changes are designed to improve network stability, reduce downtime risks, and ensure compliance with regulatory standards.
• Improved Network Resilience:
o Currently, many fixed IP APNs are hosted on a single gateway, with manual failover to a secondary gateway.
o Going forward, automated failover across multiple gateways will be introduced, enhancing network stability and reducing downtime risks.
• Fixed IP Addressing Changes:
o Fixed IP addresses will no longer be directly assigned to devices.
o Instead, each device will receive a private dynamic IP, and KPN will implement an IMSI-based NAT solution.
o This ensures that external systems continue to see the same fixed IP as before, even though the device’s local IP will change.
• Potential VPN Impact:
o General connectivity will remain unaffected, as traffic will still appear to come from the same fixed IP externally.
o However, customers who register local device IPs in their systems may see a mismatch.
o VPNs configured directly from the device may experience connectivity issues due to NAT.
o We strongly recommend affected customers contact our Network Operations team to test their VPN configurations before migration.
Customer Action (For Fixed IP & VPN Users):
• No action required for most customers, connectivity will remain stable.
• Customers using VPNs on private APNs should test their configurations to ensure compatibility with NAT.
• If your system relies on Fixed IPs being assigned directly to devices, please contact our Network Operations team for guidance on how NAT will impact your setup.
• Our Network Operations team is available to provide guidance and support regarding potential connectivity changes. If you have specific services built on your SIM devices (e.g., IPSEC VPN, SSL VPN, FTP active/passive mode, PPTP, or SIM-to-SIM device communications) that are not managed by us, we recommend contacting support@wirelesslogic.com for further review.
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Next Steps & How We Will Support You
• We will keep you informed with updates via planned maintenance emails and the SIMPro MNO outages page.
• Additional support materials will be available in the Help Centre and Wilo Digital Assistant.
• Our Network Operations team will be available to assist with general guidance on connectivity changes. Customers with specific service configurations should contact support@wirelesslogic.com for further assistance.
• For Enterprise customers, care agents will provide direct support and guidance throughout the transition.
If you have any concerns, please contact your account manager. We are committed to ensuring a smooth transition for your IoT connectivity.
Kind regards,
Customer Engagement Team
Wireless Logic