THIS IS A SCHEDULED EVENT Aug <var data-var='date'>27</var>, <var data-var='time'>20:00</var> - <var data-var='time'>22:00</var> CDT Aug <var data-var='date'>19</var>, <var data-var='time'>20:05</var> CDT Scheduled - Voxtelesys Network Engineers will be performing the final phase of our routine maintenance on core network infrastructure in the Pittsburgh DC to optimize performance and security. Our NOC will proactively monitor traffic throughout the window, and a rollback plan is in place to revert changes if necessary. While designed to be non-disruptive via redundant pathing, all maintenance activities do pose some level of risk.

Secondary PIT Network Maintenance

THIS IS A SCHEDULED EVENT Aug <var data-var='date'>25</var>, <var data-var='time'>20:00</var> - <var data-var='time'>22:00</var> CDT Aug <var data-var='date'>19</var>, <var data-var='time'>20:03</var> CDT Scheduled - Voxtelesys Network Engineers will be performing routine maintenance on core network infrastructure in our Pittsburgh DC to optimize performance and security. Our NOC will proactively monitor traffic throughout the window, and a rollback plan is in place to revert changes if necessary. While designed to be non-disruptive via redundant pathing, all maintenance activities do pose some level of risk.

Primary PIT Network Maintenance

Aug <var data-var='date'>14</var>, <var data-var='time'>20:00</var> CDT Completed - The scheduled maintenance has been completed. Aug <var data-var='date'>10</var>, <var data-var='time'>08:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Aug <var data-var='date'> 3</var>, <var data-var='time'>15:48</var> CDT Scheduled - Voxtelesys DC Ops will be performing general maintenance tasks across various racks in our Dallas–Fort Worth Datacenter. We do not anticipate any noticeable service disruption in the general day-to-day maintenance activities, however all maintenance activities do pose some level of risk. See any other posted maintenance windows for service affecting events. Please do not hesitate to contact support if you have questions or concerns!

General Maintenance in DFW DC

Jul <var data-var='date'>24</var>, <var data-var='time'>20:00</var> CDT Completed - The scheduled maintenance has been completed. Jul <var data-var='date'>20</var>, <var data-var='time'>08:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Jul <var data-var='date'>15</var>, <var data-var='time'>13:49</var> CDT Scheduled - Voxtelesys DC Ops will be performing general maintenance tasks across various racks in our Dallas–Fort Worth Datacenter. We do not anticipate any noticeable service disruption in the general day-to-day maintenance activities, however all maintenance activities do pose some level of risk. See any other posted maintenance windows for service affecting events. Please do not hesitate to contact support if you have questions or concerns!

Jul <var data-var='date'> 9</var>, <var data-var='time'>12:47</var> CDT Completed - All updates were finished on the previous update window, no updates will be done tonight. Jun <var data-var='date'>22</var>, <var data-var='time'>15:04</var> CDT Scheduled - Voxtelesys will perform the latest stable 3CX software update to remaining hosted 3CX instances that were not updated in the first window. We do not anticipate any prolonged service disruption, as the NOC technician will attempt to update after your normal business hours. Downtime may last up to one hour. This is necessary to keep your system protected. For questions or concerns, contact support via the Voxtelesys portal: https://portal.voxtelesys.net/support-tickets

Secondary Hosted 3CX Updates

Jul <var data-var='date'> 8</var>, <var data-var='time'>21:53</var> CDT Completed - 3CX updates have been completed successfully, and system availability has been verified. Physical desk phones may need to be rebooted if you are experiencing issues. If you utilize the web client/PWA you may need to clear your browser cache. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Jul <var data-var='date'> 8</var>, <var data-var='time'>21:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Jun <var data-var='date'>22</var>, <var data-var='time'>15:00</var> CDT Scheduled - Voxtelesys will perform the latest stable 3CX software update to all hosted 3CX instances that are currently not on the stable release (Update 9). We do not anticipate any prolonged service disruption, as the NOC technician will attempt to update after your normal business hours. Downtime may last up to one hour. This is necessary to keep your system protected. For questions or concerns, contact support via the Voxtelesys portal: https://portal.voxtelesys.net/support-tickets

Hosted 3CX Updates

Jun <var data-var='date'> 9</var>, <var data-var='time'>10:41</var> CDT Completed - All updates were finished on the previous update window, no updates will be done tonight. Jun <var data-var='date'> 5</var>, <var data-var='time'>14:31</var> CDT Scheduled - Voxtelesys will be applying the urgent 3CX software security patch (Update 8 SecUpd or Update 9 RC4) to remaining hosted 3CX instances that were not updated during the first maintenance window. We do not anticipate any prolonged service disruption. To minimize impact, our NOC technicians will aim to perform these updates outside your normal business hours. Any potential downtime is expected to last no longer than one hour. This is necessary to keep your system protected. For questions or concerns, contact support via the Voxtelesys portal: https://portal.voxtelesys.net/support-tickets

Canceled: Secondary Hosted 3CX Security Updates

Jun <var data-var='date'> 8</var>, <var data-var='time'>22:58</var> CDT Completed - 3CX updates have been completed successfully, and system availability has been verified. Physical desk phones may need to be rebooted if you are experiencing issues. If you utilize the web client/PWA you may need to clear your browser cache. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Jun <var data-var='date'> 8</var>, <var data-var='time'>21:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Jun <var data-var='date'> 5</var>, <var data-var='time'>14:29</var> CDT Scheduled - Voxtelesys will be applying an urgent 3CX software security patch (Update 8 SecUpd or Update 9 RC4) to all hosted 3CX instances that are not currently on a recommended release. 3CX recently issued a security alert regarding a web server configuration vulnerability in a third-party component. To ensure your system remains fully protected, it is necessary that we apply this hotfix. We do not anticipate any prolonged service disruption. To minimize impact, our NOC technicians will aim to perform these updates outside your normal business hours. Any potential downtime is expected to last no longer than one hour. For questions or concerns, please contact support via the Voxtelesys portal: https://portal.voxtelesys.net/support-tickets

Hosted 3CX Security Updates

May <var data-var='date'> 8</var>, <var data-var='time'>19:00</var> CDT Completed - The scheduled maintenance has been completed. May <var data-var='date'> 3</var>, <var data-var='time'>14:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Apr <var data-var='date'>22</var>, <var data-var='time'>15:42</var> CDT Scheduled - Voxtelesys DC Ops will be performing general maintenance tasks across various racks in our Pittsburgh Datacenter. We do not anticipate any noticeable service disruption in the general day-to-day maintenance activities, however all maintenance activities do pose some level of risk. See any other posted maintenance windows for service affecting events. Please do not hesitate to contact support if you have questions or concerns!

General Maintenance in PIT DC

May <var data-var='date'> 8</var>, <var data-var='time'>11:01</var> CDT Resolved - This incident has been resolved. May <var data-var='date'> 8</var>, <var data-var='time'>00:04</var> CDT Monitoring - The upstream providers issue has been mitigated. We have reported the issue and are awaiting response. We will continue to monitor connectivity in the DFW DC. May <var data-var='date'> 7</var>, <var data-var='time'>23:08</var> CDT Investigating - We are investigating an upstream internet provider who is affecting connectivity for some customers.

Intermittent DFW Network Connectivity

May <var data-var='date'> 6</var>, <var data-var='time'>17:35</var> CDT Completed - PIT Network Router Maintenance has been postponed to a later date. May <var data-var='date'> 1</var>, <var data-var='time'>15:55</var> CDT Scheduled - Voxtelesys Network Engineers will be performing core router maintenance on primary routers. This will take place outside normal operating hours in the North American market to minimize disruption to your service. Some circuits to our PIT Datacenter may experience brief, momentary drops in connection as we perform the upgrades and while routing is switched between the redundant equipment. We apologize for any inconvenience this may cause and appreciate your understanding as we work to improve the reliability and capacity of the services you experience with Voxtelesys for the years to come.

Postponed: Primary PIT Network Router Maintenance

May <var data-var='date'> 6</var>, <var data-var='time'>17:34</var> CDT Completed - PIT network router maintenance has been postponed to a later date. May <var data-var='date'> 1</var>, <var data-var='time'>15:54</var> CDT Scheduled - Voxtelesys Network Engineers will be performing core router maintenance on secondary routers. This will take place outside normal operating hours in the North American market to minimize disruption to your service. Some circuits to our PIT Datacenter may experience brief, momentary drops in connection as we perform the upgrades and while routing is switched between the redundant equipment. We apologize for any inconvenience this may cause and appreciate your understanding as we work to improve the reliability and capacity of the services you experience with Voxtelesys for the years to come.

Postponed: Secondary PIT Network Router Maintenance

May <var data-var='date'> 6</var>, <var data-var='time'>10:58</var> CDT Resolved - Our Network Operations team immediately intervened, successfully recovering the server and migrating the affected 3CX instances to a healthy node. May <var data-var='date'> 6</var>, <var data-var='time'>10:43</var> CDT Identified - A server node in our SLC Datacenter experienced an unexpected transient hardware fault, which briefly affected service for a subset of customers.

Recovered: Transient Hardware Fault on SLC 3CX Server Node

May <var data-var='date'> 3</var>, <var data-var='time'>22:05</var> CDT Completed - The scheduled maintenance has been completed. May <var data-var='date'> 3</var>, <var data-var='time'>21:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Apr <var data-var='date'>28</var>, <var data-var='time'>10:48</var> CDT Scheduled - In preparation for future improvements, we will be performing maintenance on our internal networking within the Pittsburgh Datacenter. This second update to routing configurations will be deployed in monitored stages with testing and a rollback plan in place. We do not anticipate any noticeable service disruption as a result of this maintenance, though all maintenance activities carry some level of inherent risk. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets

PIT Internal Routing Maintenance

Apr <var data-var='date'>28</var>, <var data-var='time'>20:53</var> CDT Completed - The preventive maintenance on the SLC registrar has been completed. Apr <var data-var='date'>28</var>, <var data-var='time'>19:45</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Apr <var data-var='date'>27</var>, <var data-var='time'>08:59</var> CDT Scheduled - We will perform minor preventive maintenance to the SLC Registrar endpoint. A small subset of users may see trunks re-register to other geo-redundant endpoints during this time. We do not anticipate any noticeable service disruption as a result of this maintenance, though all maintenance activities carry some level of inherent risk.

Preventive Maintenance: SLC Registrar Endpoint

Apr <var data-var='date'>27</var>, <var data-var='time'>20:03</var> CDT Completed - The preventive maintenance on the DFW registrar has been completed. Apr <var data-var='date'>27</var>, <var data-var='time'>19:45</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Apr <var data-var='date'>24</var>, <var data-var='time'>08:51</var> CDT Scheduled - We will perform minor preventive maintenance to the DFW Registrar endpoint. A small subset of users may see trunks re-register to other geo-redundant endpoints during this time. We do not anticipate any noticeable service disruption as a result of this maintenance, though all maintenance activities carry some level of inherent risk.

Preventive Maintenance: DFW Registrar Endpoint

Apr <var data-var='date'>27</var>, <var data-var='time'>19:33</var> CDT Completed - PIT internal routing maintenance has been completed. Apr <var data-var='date'>27</var>, <var data-var='time'>18:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Apr <var data-var='date'>23</var>, <var data-var='time'>11:21</var> CDT Scheduled - In preparation for future improvements, we will be performing maintenance on our internal networking within the Pittsburgh Datacenter. This update to routing configurations will be deployed in monitored stages with testing and a rollback plan in place. We do not anticipate any noticeable service disruption as a result of this maintenance, though all maintenance activities carry some level of inherent risk. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets

Apr <var data-var='date'>20</var>, <var data-var='time'>18:15</var> CDT Resolved - Mitigations via routing change have continued to be stable. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Apr <var data-var='date'>20</var>, <var data-var='time'>14:43</var> CDT Monitoring - The Network Operations team was able to mitigate the issue by implementing a routing change. We will continue to actively monitor. Apr <var data-var='date'>20</var>, <var data-var='time'>14:25</var> CDT Identified - We are addressing a localized routing issue affecting internal traffic within the PIT1 data center.

Restored: PIT Internal Routing

Apr <var data-var='date'>16</var>, <var data-var='time'>20:00</var> CDT Completed - The scheduled maintenance has been completed. Apr <var data-var='date'>13</var>, <var data-var='time'>06:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Mar <var data-var='date'>31</var>, <var data-var='time'>11:34</var> CDT Scheduled - Voxtelesys DC Ops will be performing general maintenance tasks across various racks in our Pittsburgh Datacenter. We do not anticipate any noticeable service disruption in the general day-to-day maintenance activities, however all maintenance activities do pose some level of risk. See any other posted maintenance windows for service affecting events. Please do not hesitate to contact support if you have questions or concerns!

Apr <var data-var='date'> 9</var>, <var data-var='time'>19:55</var> CDT Resolved - There have been no further reports of missing push notifications and all tests continue to pass. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Apr <var data-var='date'> 9</var>, <var data-var='time'>09:48</var> CDT Monitoring - We have identified a connectivity issue affecting some push notification deliveries and have implemented a routing adjustment to bypass the specific external routing irregularity. Immediate testing has shown positive results, and that notifications are delivering successfully. No action is required from your end as we will continue to monitor for stability. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Apr <var data-var='date'> 9</var>, <var data-var='time'>07:47</var> CDT Investigating - We are currently investigating reports of some users not receiving push notifications on the 3CX Mobile App.

3CX Mobile Push Notification Delivery Issues

Apr <var data-var='date'> 8</var>, <var data-var='time'>17:29</var> CDT Completed - All updates were finished on the previous update window. Apr <var data-var='date'> 2</var>, <var data-var='time'>10:39</var> CDT Scheduled - Voxtelesys will perform the latest stable 3CX software update to remaining hosted 3CX instances that were not updated in the first window. We do not anticipate any prolonged service disruption, as the NOC technician will attempt to update after your normal business hours. Downtime may last up to one hour. This is necessary to keep your system protected. For questions or concerns, contact support via the Voxtelesys portal: https://portal.voxtelesys.net/support-tickets

Canceled: Secondary Hosted 3CX Updates

Apr <var data-var='date'> 7</var>, <var data-var='time'>22:52</var> CDT Completed - 3CX updates have been completed successfully, and system availability has been verified. Physical desk phones may need to be rebooted if you are experiencing issues. If you utilize the web client/PWA you may need to clear your browser cache. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Apr <var data-var='date'> 7</var>, <var data-var='time'>21:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Apr <var data-var='date'> 2</var>, <var data-var='time'>10:37</var> CDT Scheduled - Voxtelesys will perform the latest stable 3CX software update to all hosted 3CX instances that are currently not on the stable release (Update 8A). We do not anticipate any prolonged service disruption, as the NOC technician will attempt to update after your normal business hours. Downtime may last up to one hour. This is necessary to keep your system protected. For questions or concerns, contact support via the Voxtelesys portal: https://portal.voxtelesys.net/support-tickets

Mar <var data-var='date'>26</var>, <var data-var='time'>17:32</var> CDT Resolved - There have been no further reports of missing push notifications and all tests continue to pass. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Mar <var data-var='date'>26</var>, <var data-var='time'>10:04</var> CDT Monitoring - We have identified a connectivity issue affecting some push notification deliveries and have implemented a routing adjustment to bypass the specific external routing irregularity. Immediate testing has shown positive results, and that notifications are delivering successfully. No action is required from your end as we will continue to monitor for stability. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets Mar <var data-var='date'>26</var>, <var data-var='time'>09:02</var> CDT Investigating - We are currently investigating reports of some users not receiving push notifications on the 3CX Mobile App.

Mar <var data-var='date'>19</var>, <var data-var='time'>22:56</var> CDT Completed - The routing optimizations have been completed. Mar <var data-var='date'>19</var>, <var data-var='time'>22:00</var> CDT In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Mar <var data-var='date'>16</var>, <var data-var='time'>12:17</var> CDT Scheduled - Voxtelesys will be performing network routing optimizations to improve internal traffic flow and infrastructure efficiency. No action is required from your end. Our NOC will proactively monitor traffic during the transition, and a rollback plan is in place to revert changes if necessary. While designed to be non-disruptive, all maintenance activities pose risk of brief latency or temporary reachability issues as the network converges. Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our portal: https://portal.voxtelesys.net/support-tickets

General Network Routing Optimizations

Mar <var data-var='date'>19</var>, <var data-var='time'>16:46</var> CDT Completed - The scheduled maintenance has been completed. Jan <var data-var='date'>19</var>, <var data-var='time'>17:00</var> CST Scheduled - To continuously improve our service and platform resiliency, we will be deploying additional signaling redundancy in the Eastern United States on or after March 9th, 2026. If you self-host your phone system and enforce strict traffic blocking or Geo-blocking, action is required. To prevent service disruptions with your SIP devices (PBX, ATA, etc.) and ensure a seamless transition, please verify that your PBX network configuration includes our new signaling and media IP range (216.52.108.0/22) in your firewall rules and/or local ACL’s. For a complete list of our IP addresses, please visit our developer documentation: https://developer.voxtelesys.com/network/sip/ https://developer.voxtelesys.com/network/media/ Please do not hesitate to contact support via ticket if you have questions or concerns. You can create a ticket on our Portal.

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Secondary PIT Network Maintenance

Primary PIT Network Maintenance

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General Maintenance in DFW DC

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