External Maintenance - AT&T - US
Scheduled for Apr 7, 04:00 - 11:00 UTC
Scheduled
Dear Client,



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 affects: Connectivity by region (SMS - US - ShortCode, MMS - US).