We are writing to inform you that AT&T - US will conduct a maintenance on their platform at the following 2 windows, specified below.
Type: Scheduled Maintenance
First window Start Time: 2021-04-07 04:00 UTC End Time: 2021-04-07 11:00 UTC
Second window: Start Time: 2021-04-08 04:00 UTC End Time: 2021-04-08 11:00 UTC
Impact MT: Clients may experience delayed/rejected/failed Short Code SMS and MMS MT traffic towards AT&T Impact MO: Clients may experience delayed/rejected/failed Short Code SMS and MMS MO traffic from AT&T Impact DLR: Clients may experience delayed/rejected/failed Short Code SMS and MMS DLR traffic from AT&T
On behalf of AT&T - US we appreciate your patience and apologize for any inconvenience during this maintenance period.
If for any reason the maintenance is extended or cancelled we will advise you accordingly. Please, contact support@sinch.com should you require further information or assistance
Posted Apr 05, 2021 - 19:51 UTC
This scheduled maintenance affected: Connectivity by region (SMS - US - ShortCode, MMS - US).