[MAINTENANCE] | SCHEDULED | Operator Services | DISMS 365 | 23 Jan 2021 18:00 Hrs - 22:00 Hrs. GMT | DI Application Ma

[Rama_Kumaraswam]

External Maintenance Notification
Type / Status	NEW		PCR Number	PSD-8679
Platform / Service	Operator Services – iSMSx		Maintenance Type	Scheduled
Start Date & Time (GMT) :	23-Jan-2021 18:00 Hrs.		End Date & Time (GMT) :	23-Jan-2021 22:00 Hrs.
Impact Assessment
Mobile Terminating (MT) Traffic:	Potential delay in delivery		Report Manager Access	Not Impacted
Mobile Originated (MO) Traffic:	Potential delay in delivery		Report Manager Statistics	Not Impacted
DR Notification:	Potential delay in delivery		Others:	Not Impacted
Description	Impact: Long-lived connections (e.g. SMPP) will be broken and must be re-established and short-lived connections (e.g. HTTP) and potential MPLS connectivity may be unable to be established for a few (1-2) seconds, when control of the LTM cluster transitions between the nodes.  Most SMPP binds should be down only as long as it takes for the client to recognize the connection is broken. At the very end, I am expecting the SMPP binds will be restarted to ensure all are re-established cleanly, but that operation will be performed by the team supporting those application. Duration:     There will be three changes of control during this maintenance, each with an expected downtime of no more than a few seconds.