Live status / Social & community
CallTower has planned maintenance in progress.
CallTower has planned maintenance in progress according to its official source.
Signal updated 2h ago · Sep 17, 2026, 7:05 PM UTC
Current incident · started Sep 16, 2026, 10:22 PM UTC
Out-Of-Cycle Maintenance
Purpose: Patching and preventative maintenance. Systems Affected: Microsoft: -Microsoft Teams - Migrate MAPS circuits in Ashburn to new cross-connects and test failover afterward ***Possible Impact: There is no expected impact during the circuit migration. During the failover testing, we will intentionally shutdown primary paths to force traffic over the backup connections and test failover performance. This failover testing could result in a very brief loss of audio or dropped calls.
Affected surface
Components
0 of 36 affected
Official incident text
Purpose: Patching and preventative maintenance. Systems Affected: Microsoft: -Microsoft Teams - Migrate MAPS circuits in Ashburn to new cross-connects and test failover afterward ***Possible Impact: There is no expected impact during the circuit migration. During the failover testing, we will intentionally shutdown primary paths to force traffic over the backup connections and test failover performance. This failover testing could result in a very brief loss of audio or dropped calls.
Source text is preserved verbatim and paired with its retrieval time.Last 30 days · Status timeline
What changed
- Scheduled
Purpose: Patching and preventative maintenance on multiple systems. Systems Affected: Cisco: -Webex - APAC Webex Connectivity Optimization ***Possible Impact: Cisco Webex services may experience a brief interruption while improvements are made to strengthen connectivity and increase service resiliency between Cisco and CallTower. -Cisco Jabber / MRA Phones - Security Update Expressway Clusters for CUCM ***Possible Impact: CallTower will be upgrading the Edge servers for Jabber and MRA Edge Phone Device. Users will experience a connectivity loss with their Jabber Client/Services and/or MRA Edge connection Phones. Voice: - Hong Kong Masergy Circuit Migration ***Possible Impact: Legacy OneStream voice services hosted in Hong Kong may experience a temporary interruption. Active calls may be disconnected, and new call setup may be unavailable while connectivity services are relocated within the datacenter. Failover and redundant service configurations will minimize downtime. Service will be restored upon completion of the maintenance activities. - London Infrastructure Maintenance ***Possible Impact: During this maintenance window, services hosted in the Telehouse London datacenter may experience a brief interruption as network infrastructure is upgraded. Any service impact is expected to be limited to the duration of the maintenance activity, and services will be restored immediately upon completion.
- Scheduled
Purpose: Patching and preventative maintenance on multiple systems. Systems Affected: Cisco: -Webex - Domestic US Webex Connectivity Optimization ***Possible Impact: Cisco Webex services may experience a brief interruption while improvements are made to strengthen connectivity and increase service resiliency between Cisco and CallTower.
- Scheduled
Purpose: Patching and preventative maintenance. Systems Affected: Microsoft: -Microsoft Teams - Migrate MAPS circuits in Ashburn to new cross-connects and test failover afterward ***Possible Impact: There is no expected impact during the circuit migration. During the failover testing, we will intentionally shutdown primary paths to force traffic over the backup connections and test failover performance. This failover testing could result in a very brief loss of audio or dropped calls.